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Seeking battery information/source
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Evening all,
?
I'm after some information about a battery for the PRM4720/4515.
?
I have a charged battery (which soon won't be!) that I'm hoping to re-cell with three Lithium 18650 batteries and associated BMS. The battery that I have appears to be larger than typical batteries for this series of radios, in that its case is approximately 75mm high, hence why I think I can fit the 18650's in it.
?
So, two questions:
1) Can anybody tell me the correct part number for this larger battery pack?
2) Does anybody know of a source of this battery type (dead or alive)?
?
Unfortunately, the pack is devoid of any markings apart from a Red Racal label with a stick-on serial number label.
?
Any help appreciated.
?
Keith
?
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On 5 Aug 2024, at 22:35, Keith <keith@...> wrote:
?
Evening all,
?
I'm after some information about a battery for the PRM4720/4515.
?
I have a charged battery (which soon won't be!) that I'm hoping to re-cell with three Lithium 18650 batteries and associated BMS. The battery that I have appears to be larger than typical batteries for this series of radios, in that its case is approximately 75mm high, hence why I think I can fit the 18650's in it.
?
So, two questions:
1) Can anybody tell me the correct part number for this larger battery pack?
2) Does anybody know of a source of this battery type (dead or alive)?
?
Unfortunately, the pack is devoid of any markings apart from a Red Racal label with a stick-on serial number label.
?
Any help appreciated.
?
Keith
?
I think the battery you’re looking for is only meant for the PRM4535 and PRM4740A but will probably fit others like the PRM4515. The battery is from your description 10.8v and 4400mAh. NATO number 6140-99-729-8387
? Failing that, a battery intended for the Panther BCC69. The battery is the MA4191C or NATO number 6140-99-665-8474.
? Perhaps post an image of the battery and some dimensions?
De Spence G5STO
Sent while portable! please excuse typos.
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On 6 Aug 2024, at 07:12, Robin Maddison via groups.io <robin@...> wrote:
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On 5 Aug 2024, at 22:35, Keith <keith@...> wrote:
?
Evening all,
?
I'm after some information about a battery for the PRM4720/4515.
?
I have a charged battery (which soon won't be!) that I'm hoping to re-cell with three Lithium 18650 batteries and associated BMS. The battery that I have appears to be larger than typical batteries for this series of radios, in that its case is approximately 75mm high, hence why I think I can fit the 18650's in it.
?
So, two questions:
1) Can anybody tell me the correct part number for this larger battery pack?
2) Does anybody know of a source of this battery type (dead or alive)?
?
Unfortunately, the pack is devoid of any markings apart from a Red Racal label with a stick-on serial number label.
?
Any help appreciated.
?
Keith
?
Spence & Robin,
?
Thanks for the replies.
?
I've got one of the Axess batteries, Robin. That version is too short to take the 18650-based battery pack. However, it is exactly the same "style" as the larger battery I have? - the two are interchangeable on the radio.
?
Spence - the dimensions of the larger battery are the same as the 4516 battery in the X? and Z axis (approx 73 and 30mm respectively), but the Y axis for the larger battery is approx 82mm compared to 67mm for the smaller. The 75mm I mentioned in my first post is the Y axis dimension excluding the plastic case top that mounts the metal battery contacts.
?
A bit of googling of the battery types you mention fails to throw up an actual spec for the batteries (I'd settle for just the size!), but does show two suppliers with stock that's probably suitable for re-celling. Unfortunately, it's not possible to judge from the pictures shown whether those batteries have the larger Y axis. However, those batteries are clearly "thicker", but the supplier states that they still fit onto these radios. If they are big enough to take the Lithium pack, then they would be a functional solution but not very pretty! I'll try contacting them to ask about tht critical dimension.
?
Keith
?
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Hi Keith et all, Reading your last post regarding the dimensions, I’m thinking you are talking about the large capacity cougar battery. I think It is higher(longer) than the standard Axes offered batteries, as it is a higher amperage battery. So 85mm would sound correct as against the normal 75mm high cougar battery. I’ll try and measure my batteries and confirm. BW Warren
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On 6 Aug 2024, at 18:45, Keith <keith@...> wrote:
? Spence & Robin,
?
Thanks for the replies.
?
I've got one of the Axess batteries, Robin. That version is too short to take the 18650-based battery pack. However, it is exactly the same "style" as the larger battery I have? - the two are interchangeable on the radio.
?
Spence - the dimensions of the larger battery are the same as the 4516 battery in the X? and Z axis (approx 73 and 30mm respectively), but the Y axis for the larger battery is approx 82mm compared to 67mm for the smaller. The 75mm I mentioned in my first post is the Y axis dimension excluding the plastic case top that mounts the metal battery contacts.
?
A bit of googling of the battery types you mention fails to throw up an actual spec for the batteries (I'd settle for just the size!), but does show two suppliers with stock that's probably suitable for re-celling. Unfortunately, it's not possible to judge from the pictures shown whether those batteries have the larger Y axis. However, those batteries are clearly "thicker", but the supplier states that they still fit onto these radios. If they are big enough to take the Lithium pack, then they would be a functional solution but not very pretty! I'll try contacting them to ask about tht critical dimension.
?
Keith
?
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Hi Keith, I designed my own battery case and 3D printed it but it wasn’t anywhere near tough enough for safe storage of the batteries. I’m sure you could fashion something out of plastic and keep the top.
? De Spence G5STO
Sent while portable! please excuse typos.
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On 6 Aug 2024, at 19:03, Warren via groups.io <leserve1@...> wrote:
? Hi Keith et all, Reading your last post regarding the dimensions, I’m thinking you are talking about the large capacity cougar battery. I think It is higher(longer) than the standard Axes offered batteries, as it is a higher amperage battery. So 85mm would sound correct as against the normal 75mm high cougar battery. I’ll try and measure my batteries and confirm. BW Warren M0WLS On 6 Aug 2024, at 18:45, Keith <keith@...> wrote:
? Spence & Robin,
?
Thanks for the replies.
?
I've got one of the Axess batteries, Robin. That version is too short to take the 18650-based battery pack. However, it is exactly the same "style" as the larger battery I have? - the two are interchangeable on the radio.
?
Spence - the dimensions of the larger battery are the same as the 4516 battery in the X? and Z axis (approx 73 and 30mm respectively), but the Y axis for the larger battery is approx 82mm compared to 67mm for the smaller. The 75mm I mentioned in my first post is the Y axis dimension excluding the plastic case top that mounts the metal battery contacts.
?
A bit of googling of the battery types you mention fails to throw up an actual spec for the batteries (I'd settle for just the size!), but does show two suppliers with stock that's probably suitable for re-celling. Unfortunately, it's not possible to judge from the pictures shown whether those batteries have the larger Y axis. However, those batteries are clearly "thicker", but the supplier states that they still fit onto these radios. If they are big enough to take the Lithium pack, then they would be a functional solution but not very pretty! I'll try contacting them to ask about tht critical dimension.
?
Keith
?
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Are these batteries interchangeable with those for the PRC6894?
I have several of these nice radios but the battery situation is a bit grim.
Peter
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On 8/6/2024 2:53 PM, Spence G5STO via groups.io wrote: Hi Keith, I designed my own battery case and 3D printed it but it wasn’t anywhere near tough enough for safe storage of the batteries. I’m sure you could fashion something out of plastic and keep the top.
? De Spence G5STO
Sent while portable! please excuse typos.
On 6 Aug 2024, at 19:03, Warren via groups.io <leserve1@...> wrote:
? Hi Keith et all,
Reading your last post regarding the dimensions, I’m thinking you are talking about the large capacity cougar battery. I think It is higher(longer) than the standard Axes offered batteries, as it is a higher amperage battery. So 85mm would sound correct as against the normal 75mm high cougar battery. I’ll try and measure my batteries and confirm.
BW
Warren
M0WLS
On 6 Aug 2024, at 18:45, Keith <keith@...> wrote:
?
Spence & Robin,
Thanks for the replies.
I've got one of the Axess batteries, Robin. That version is too short to take the 18650-based battery pack. However, it is exactly the same "style" as the larger battery I have? - the two are interchangeable on the radio.
Spence - the dimensions of the larger battery are the same as the 4516 battery in the X? and Z axis (approx 73 and 30mm respectively), but the Y axis for the larger battery is approx 82mm compared to 67mm for the smaller. The 75mm I mentioned in my first post is the Y axis dimension excluding the plastic case top that mounts the metal battery contacts.
A bit of googling of the battery types you mention fails to throw up an actual spec for the batteries (I'd settle for just the size!), but does show two suppliers with stock that's probably suitable for re-celling. Unfortunately, it's not possible to judge from the pictures shown whether those batteries have the larger Y axis. However, those batteries are clearly "thicker", but the supplier states that they still fit onto these radios. If they are big enough to take the Lithium pack, then they would be a functional solution but not very pretty! I'll try contacting them to ask about tht critical dimension.
Keith
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Hi Warren, ? That would be interesting – if that’s what it is, a part number would be very handy (mine have no trace of any identifying text on the cases). ? Keith ? ?
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From: [email protected] <[email protected]> On Behalf Of Warren via groups.io
Sent: Tuesday, August 6, 2024 7:03 PM
To: [email protected]
Subject: Re: [RacalRadio] Seeking battery information/source? Hi Keith et all, Reading your last post regarding the dimensions, I’m thinking you are talking about the large capacity cougar battery. I think It is higher(longer) than the standard Axes offered batteries, as it is a higher amperage battery. So 85mm would sound correct as against the normal 75mm high cougar battery. I’ll try and measure my batteries and confirm. M0WLS
On 6 Aug 2024, at 18:45, Keith <keith@...> wrote:
? I've got one of the Axess batteries, Robin. That version is too short to take the 18650-based battery pack. However, it is exactly the same "style" as the larger battery I have? - the two are interchangeable on the radio. Spence - the dimensions of the larger battery are the same as the 4516 battery in the X? and Z axis (approx 73 and 30mm respectively), but the Y axis for the larger battery is approx 82mm compared to 67mm for the smaller. The 75mm I mentioned in my first post is the Y axis dimension excluding the plastic case top that mounts the metal battery contacts. A bit of googling of the battery types you mention fails to throw up an actual spec for the batteries (I'd settle for just the size!), but does show two suppliers with stock that's probably suitable for re-celling. Unfortunately, it's not possible to judge from the pictures shown whether those batteries have the larger Y axis. However, those batteries are clearly "thicker", but the supplier states that they still fit onto these radios. If they are big enough to take the Lithium pack, then they would be a functional solution but not very pretty! I'll try contacting them to ask about tht critical dimension.
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Hi Spence, ? I haven’t yet explored the delights of 3D printing, but this could be my excuse to have a go! ? The only problem is that I may have to dispose of a radio or two to make room for it…. ? Keith ? ?
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From: [email protected] <[email protected]> On Behalf Of Spence G5STO via groups.io
Sent: Tuesday, August 6, 2024 7:54 PM
To: [email protected]
Subject: Re: [RacalRadio] Seeking battery information/source? Hi Keith, I designed my own battery case and 3D printed it but it wasn’t anywhere near tough enough for safe storage of the batteries. I’m sure you could fashion something out of plastic and keep the top. ? Sent while portable! please excuse typos.
On 6 Aug 2024, at 19:03, Warren via groups.io <leserve1@...> wrote:
?Hi Keith et all, Reading your last post regarding the dimensions, I’m thinking you are talking about the large capacity cougar battery. I think It is higher(longer) than the standard Axes offered batteries, as it is a higher amperage battery. So 85mm would sound correct as against the normal 75mm high cougar battery. I’ll try and measure my batteries and confirm. M0WLS
On 6 Aug 2024, at 18:45, Keith <keith@...> wrote:
? I've got one of the Axess batteries, Robin. That version is too short to take the 18650-based battery pack. However, it is exactly the same "style" as the larger battery I have? - the two are interchangeable on the radio. Spence - the dimensions of the larger battery are the same as the 4516 battery in the X? and Z axis (approx 73 and 30mm respectively), but the Y axis for the larger battery is approx 82mm compared to 67mm for the smaller. The 75mm I mentioned in my first post is the Y axis dimension excluding the plastic case top that mounts the metal battery contacts. A bit of googling of the battery types you mention fails to throw up an actual spec for the batteries (I'd settle for just the size!), but does show two suppliers with stock that's probably suitable for re-celling. Unfortunately, it's not possible to judge from the pictures shown whether those batteries have the larger Y axis. However, those batteries are clearly "thicker", but the supplier states that they still fit onto these radios. If they are big enough to take the Lithium pack, then they would be a functional solution but not very pretty! I'll try contacting them to ask about tht critical dimension.
|
Hello Peter,
I'm a very long way from being knowledgeable about any of these radios, but, from looking at the pictures of the 6894 on Ebay and elsewhere (link below), I'd say that the batteries are not compatible - the 6894 appears to have a totally different method of attachment to the radio.
Keith
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-----Original Message----- From: [email protected] < [email protected]> On Behalf Of Peter Gottlieb Sent: Thursday, August 8, 2024 12:27 AM To: [email protected]Subject: Re: [RacalRadio] Seeking battery information/source Are these batteries interchangeable with those for the PRC6894? I have several of these nice radios but the battery situation is a bit grim. Peter On 8/6/2024 2:53 PM, Spence G5STO via groups.io wrote: Hi Keith, I designed my own battery case and 3D printed it but it
wasn’t anywhere near tough enough for safe storage of the batteries.
I’m sure you could fashion something out of plastic and keep the top.
De Spence G5STO
Sent while portable! please excuse typos.
On 6 Aug 2024, at 19:03, Warren via groups.io
<leserve1@...> wrote:
? Hi Keith et all,
Reading your last post regarding the dimensions, I’m thinking you are
talking about the large capacity cougar battery. I think It is
higher(longer) than the standard Axes offered batteries, as it is a
higher amperage battery. So 85mm would sound correct as against the
normal 75mm high cougar battery. I’ll try and measure my batteries and confirm.
BW
Warren
M0WLS
On 6 Aug 2024, at 18:45, Keith <keith@...> wrote:
?
Spence & Robin,
Thanks for the replies.
I've got one of the Axess batteries, Robin. That version is too
short to take the 18650-based battery pack. However, it is exactly the same "style"
as the larger battery I have - the two are interchangeable on the radio.
Spence - the dimensions of the larger battery are the same as the
4516 battery in the X and Z axis (approx 73 and 30mm respectively),
but the Y axis for the larger battery is approx 82mm compared to 67mm for the smaller.
The 75mm I mentioned in my first post is the Y axis dimension
excluding the plastic case top that mounts the metal battery contacts.
A bit of googling of the battery types you mention fails to throw up
an actual spec for the batteries (I'd settle for just the size!),
but does show two suppliers with stock that's probably suitable for re-celling.
Unfortunately, it's not possible to judge from the pictures shown
whether those batteries have the larger Y axis. However, those
batteries are clearly "thicker", but the supplier states that they
still fit onto these radios. If they are big enough to take the
Lithium pack, then they would be a functional solution but not very
pretty! I'll try contacting them to ask about tht critical dimension.
Keith
|
Ebay is so weird.? I can see that listing at the link you gave but if I try to search for PRC6894 there are no hits.? If I then try to look at the seller's listings, that one does not show up.? Plenty of other items, just not that radio.? If I go to the ebay category and look there, also no hits.? It's as if that particular item is blocked from search at my location.? However, the seller is in the USA and claims to ship to the USA (among a huge list of countries).
Odd.
Peter
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On 8/8/2024 4:57 AM, Keith via groups.io wrote: Hello Peter,
I'm a very long way from being knowledgeable about any of these radios, but, from looking at the pictures of the 6894 on Ebay and elsewhere (link below), I'd say that the batteries are not compatible - the 6894 appears to have a totally different method of attachment to the radio.
Keith
-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Peter Gottlieb
Sent: Thursday, August 8, 2024 12:27 AM
To: [email protected]
Subject: Re: [RacalRadio] Seeking battery information/source
Are these batteries interchangeable with those for the PRC6894?
I have several of these nice radios but the battery situation is a bit grim.
Peter
On 8/6/2024 2:53 PM, Spence G5STO via groups.io wrote:
Hi Keith, I designed my own battery case and 3D printed it but it
wasn’t anywhere near tough enough for safe storage of the batteries.
I’m sure you could fashion something out of plastic and keep the top.
De Spence G5STO
Sent while portable! please excuse typos.
On 6 Aug 2024, at 19:03, Warren via groups.io
<leserve1@...> wrote:
? Hi Keith et all,
Reading your last post regarding the dimensions, I’m thinking you are
talking about the large capacity cougar battery. I think It is
higher(longer) than the standard Axes offered batteries, as it is a
higher amperage battery. So 85mm would sound correct as against the
normal 75mm high cougar battery. I’ll try and measure my batteries and confirm.
BW
Warren
M0WLS
On 6 Aug 2024, at 18:45, Keith <keith@...> wrote:
?
Spence & Robin,
Thanks for the replies.
I've got one of the Axess batteries, Robin. That version is too
short to take the 18650-based battery pack. However, it is exactly the same "style"
as the larger battery I have - the two are interchangeable on the radio.
Spence - the dimensions of the larger battery are the same as the
4516 battery in the X and Z axis (approx 73 and 30mm respectively),
but the Y axis for the larger battery is approx 82mm compared to 67mm for the smaller.
The 75mm I mentioned in my first post is the Y axis dimension
excluding the plastic case top that mounts the metal battery contacts.
A bit of googling of the battery types you mention fails to throw up
an actual spec for the batteries (I'd settle for just the size!),
but does show two suppliers with stock that's probably suitable for re-celling.
Unfortunately, it's not possible to judge from the pictures shown
whether those batteries have the larger Y axis. However, those
batteries are clearly "thicker", but the supplier states that they
still fit onto these radios. If they are big enough to take the
Lithium pack, then they would be a functional solution but not very
pretty! I'll try contacting them to ask about tht critical dimension.
Keith
|
  Be forewarned that there are two identical listings with two totally different sellers on that exact radio.?
|
Very curious!
I actually have three, just need good batteries and wanted to take a quick look and see if the seller had just battery cases.? Yes I understand the technical issues with low power etc.
Peter
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On 8/8/2024 8:40 AM, Eric Boyle via groups.io wrote: Be forewarned that there are two identical listings with two totally different sellers on that exact radio.
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Oddly, when I did the initial Google search, in addition to the Ebay result, the following link turned up, it was obviously the same as the Ebay sale, with the same pictures:
When I attempted to go to the same link a few minutes later, it was giving the same 404 result it gives now. I didn't give it much thought as I wasn't intending to buy anything, just looking for a clue about the batteries.
A bit more light Googling suggests that the address given for that business doesn't exist, there doesn't appear to be a Columbia Road in Dover USA. There is a Columbia Ave, but the premises numbering goes nowhere near 4474.
Keith
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-----Original Message----- From: [email protected] < [email protected]> On Behalf Of Peter Gottlieb Sent: Thursday, August 8, 2024 1:48 PM To: [email protected]Subject: Re: [RacalRadio] Seeking battery information/source Very curious! I actually have three, just need good batteries and wanted to take a quick look and see if the seller had just battery cases. Yes I understand the technical issues with low power etc. Peter On 8/8/2024 8:40 AM, Eric Boyle via groups.io wrote: Be forewarned that there are two identical listings with two totally
different sellers on that exact radio.
|
This sounds really sketchy.
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On 8/8/2024 10:17 AM, Keith via groups.io wrote: Oddly, when I did the initial Google search, in addition to the Ebay result, the following link turned up, it was obviously the same as the Ebay sale, with the same pictures:
When I attempted to go to the same link a few minutes later, it was giving the same 404 result it gives now. I didn't give it much thought as I wasn't intending to buy anything, just looking for a clue about the batteries.
A bit more light Googling suggests that the address given for that business doesn't exist, there doesn't appear to be a Columbia Road in Dover USA. There is a Columbia Ave, but the premises numbering goes nowhere near 4474.
Keith
-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Peter Gottlieb
Sent: Thursday, August 8, 2024 1:48 PM
To: [email protected]
Subject: Re: [RacalRadio] Seeking battery information/source
Very curious!
I actually have three, just need good batteries and wanted to take a quick look and see if the seller had just battery cases. Yes I understand the technical issues with low power etc.
Peter
On 8/8/2024 8:40 AM, Eric Boyle via groups.io wrote:
Be forewarned that there are two identical listings with two totally
different sellers on that exact radio.
|
Robin Maddison
Spence G5STO
Eric Boyle