Re: Windcamp WLB 817 - recharge with a charger for LIPO
however, alarmism without advice is a bit pointless, don't you think?
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73 by Max IK0TIX
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Re: Windcamp WLB 817 - recharge with a charger for LIPO
On Mon, Nov 18, 2019 at 12:30 PM, Roger Lapthorn wrote:
Just be aware that certainly LiIon packs can be little bombs and MUST be charged the right way. I speak from professional experience. Treat them wrongly and be prepared for the consequences.?
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Cheers Roger G3XBM?
Sent from my Huawei phone
-------- Original Message -------- Subject: Re: [ft817] Windcamp WLB 817 - recharge with a charger for LIPO From: John G0GCD <john@...> To: [email protected]CC:
Well... I think that this falls into the 'too complicated' bucket.
My solution will be to use a 12vdc to 240vac inverter, driving the supplied wallwart charger.
Job done...
Beauty of that solution is, I can also use a 240vac to 12vdc psu to run the FT817 'off the mains' whilst recharging the battery?!
Thanks again
John G0GCD
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I insist with the questions just for security reasons ? -- 73 by Max IK0TIX
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Re: Windcamp WLB 817 - recharge with a charger for LIPO
Just be aware that certainly LiIon packs can be little bombs and MUST be charged the right way. I speak from professional experience. Treat them wrongly and be prepared for the consequences.?
Cheers Roger G3XBM?
Sent from my Huawei phone
-------- Original Message -------- Subject: Re: [ft817] Windcamp WLB 817 - recharge with a charger for LIPO From: John G0GCD To: [email protected]CC: Well... I think that this falls into the 'too complicated' bucket.
My solution will be to use a 12vdc to 240vac inverter, driving the supplied wallwart charger.
Job done...
Beauty of that solution is, I can also use a 240vac to 12vdc psu to run the FT817 'off the mains' whilst recharging the battery?!
Thanks again
John G0GCD
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Randy,
The T1 is a fabulous little tuner. In fact, I have one I'm selling. I got an Elecraft KX2 with a built-in tuner, so it is excess to my needs. Comes with the FT-817 control cable. Contact me off-list (nv4c dot ian at gmail dot com) if you're interested.
73 de,
Ian, NV4C
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Re: Windcamp WLB 817 - recharge with a charger for LIPO
Well... I think that this falls into the 'too complicated' bucket.
My solution will be to use a 12vdc to 240vac inverter, driving the supplied wallwart charger.
Job done...
Beauty of that solution is, I can also use a 240vac to 12vdc psu to run the FT817 'off the mains' whilst recharging the battery?!
Thanks again
John G0GCD
?
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Re: Windcamp WLB 817 - recharge with a charger for LIPO
Clyde,
the type of charger I have is of the type you described.
The problem is what you said: if the battery charger recharges the battery, there is no end-of-charge confirmation.
I think the charging circuit, present in the after-market cover, actually blocks the power supply.
For this the original charger LED turns green.
But, if I use the RC charger (configured unbalanced), what happens when the charging circuit, contained in the cover, cuts the power supply?
Does my RC charger continue to pump energy or does it notice that it no longer requests power?
It seems to me that you did this test.
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73 by Max IK0TIX
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Re: Windcamp WLB 817 - recharge with a charger for LIPO
Hello,
You are going to find a heck of a lot of Chargers out there.
There are single charge port to multiple ports. The main thing in choosing a charger is make sure it will charge different types or chemistries of LiIon batteries.
Lithium ion, lithium poly ect.
As I suggested before, go to your local RC hobby shop or if you want to get one via mail order, HorizonHobbies.com.
The one I have, actually one of many, will charge different Li-ion chemistries, but also, SLA, ni-cad and metal hydride type batteries. Single to multiple cells, two charge ports and balanced or un- balanced. It will charge, discharge and cycle batteries.
Hope this helps,
Tom KC7BJE?
All software and menu selected and controlled.
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Re: Windcamp WLB 817 - recharge with a charger for LIPO
On Sat, Nov 16, 2019 at 09:59 AM, Clyde Lambert wrote:
Hello.
The instructions I got with my kit said you could charge the battery with such a charger. However you had to set up the charger as non- balanced configuration. Being a avid RC Pilot, both planes, quads and copters, I had to try to charge the battery with my LiPo charger set to non balanced charging. Did not work.
Due to the regulatory PC BOARD, built in the battery, I could not charge it. The charger would show "Cell error". THE ONLY difference between the LiIon battery in the kit and my regular aircraft battery is the control board on the kit battery.
Any 12 volt wall wort charger with a max charge current of 3 amps can be used. However the charger that comes with the kit has a LED charge indicator that shows when the battery is fully charged. The control board on the battery is looking for 12 volts dc to charge the battery.
Being the LiPo - LiIon charger can not measure the voltage and internal resistance of the battery due to the control board on the battery, it will not charge it.
I would highly recommend using the wall charger that came with the kit, or similar one to charge the kit battery with the LED on it you will know when the battery is fully charged.
Hope this helps.
Tom Lambert KC7BJE?
Clyde,
thank you very much, it is the kind of experience I was looking for. Thanks for the answer even if, frankly, I was hoping for another outcome.
It seems to me that you have done all the tests I would have done these days too. In my GoKit I will have to find space for another charger. What a pity!
? -- 73 by Max IK0TIX
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Re: Windcamp WLB 817 - recharge with a charger for LIPO
And the deep cycle batteries and solar panels will be here soon.? Also run my ft817 off of them too. 72/73 DR TIMOTHY-ALLEN ALBERTSON
KD?OIA/(ex KG6IRH)
On Sun, Nov 17, 2019 at 8:36 AM Timothy-Allen Albertson via Groups.Io <kd0oia= [email protected]> wrote: Im using a power supply to run my laptop, hotspot and cell. Got cigarette plugs with LCD inpuit V, output V and output A 72/73 DR TIMOTHY-ALLEN ALBERTSON
KD?OIA/(ex KG6IRH)
On Sun, Nov 17, 2019 at 8:32 AM Raymond Sills via Groups.Io <raysills3= [email protected]> wrote:
And... let's not forget that virtually every cell phone and every laptop computer, tablet, etc., has a lithium battery inside.? Most phones run off a single cell battery and are designed to use a 5 volt charging source.? I have a little gadget that I can insert into the USB cable that's used to recharge those devices.? The gadget is a voltage and current metering device, so I can see exactly how much power is going into the device when charging.? It also confirms when charging is complete, because the current draw is down to almost zero.? This also tells me that the device has an internal battery management system.
73 de Ray
K2ULR
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Re: Windcamp WLB 817 - recharge with a charger for LIPO
Im using a power supply to run my laptop, hotspot and cell. Got cigarette plugs with LCD inpuit V, output V and output A 72/73 DR TIMOTHY-ALLEN ALBERTSON
KD?OIA/(ex KG6IRH)
On Sun, Nov 17, 2019 at 8:32 AM Raymond Sills via Groups.Io <raysills3= [email protected]> wrote:
And... let's not forget that virtually every cell phone and every laptop computer, tablet, etc., has a lithium battery inside.? Most phones run off a single cell battery and are designed to use a 5 volt charging source.? I have a little gadget that I can insert into the USB cable that's used to recharge those devices.? The gadget is a voltage and current metering device, so I can see exactly how much power is going into the device when charging.? It also confirms when charging is complete, because the current draw is down to almost zero.? This also tells me that the device has an internal battery management system.
73 de Ray
K2ULR
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Re: Windcamp WLB 817 - recharge with a charger for LIPO
And... let's not forget that virtually every cell phone and every laptop computer, tablet, etc., has a lithium battery inside. ?Most phones run off a single cell battery and are designed to use a 5 volt charging source. ?I have a little gadget that I can insert into the USB cable that's used to recharge those devices. ?The gadget is a voltage and current metering device, so I can see exactly how much power is going into the device when charging. ?It also confirms when charging is complete, because the current draw is down to almost zero. ?This also tells me that the device has an internal battery management system.
73 de Ray
K2ULR
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Re: Windcamp WLB 817 - recharge with a charger for LIPO
My emergency call button contains an Li Battery. At least I know they are dangerous.? Hell the service I got it from was unaware of that fact. 72/73 DR TIMOTHY-ALLEN ALBERTSON
KD?OIA/(ex KG6IRH)
The papers you gave the link to applies to that type battery ONLY. Each different type of Lithium battery takes a different charge voltage as well as current. The types of chargers we use in the RC Field has settings for most of the varieties, LiIon, Li-Poly and other Lithium?chemistries. The types of Chargers we use are CPU controlled with software settings for the type batteries that is being charged. The Li-Ion battery in the Windcamp? kit or those made like it that are made for the FT-817 have a controller PCB that not only charges the battery but also protects it from over charging and from over discharging the cells.? That type of system requires a constant and regulated voltage and current. Again that is due to the control board attached to the battery. A battery without a control board requires a specific charger made for it Also the "C" rating of the battery has to be considered when charging. The "C" rating of a battery is used to determine the charging current used. Our RC Club and others in RC has used multiple types of Lithium batteries and Chargers for over 10 or more years. May I suggest to anyone who does not really know how to use, charge or handle any of the Lithium types of batteries contact your local Radio Control Club members. We or they have used, charged and handled these batteries for many years. We do not know everything due to many new Lithium chemistries being used in new batteries, but we do keep up on them. If you intend to use them also, PLEASE, make sure you use the appropriate Chargers, charging containers and know how to handle them. They ARE dangerous. No matter the Chemistry. Tom Lambert KC7BJE?
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-?User friends of Yaesu FT series transceivers, who knows how to configure CW please post here on this forum how to do it.
In this case mainly the Yaesu FT897 and the Yaesu FT817.
I want to train CW but I don't know how to do it and I didn't find on the internet how to do it.
I appreciate any help.
Oliveira? PU2OLT
Oliveira? Yaesu Ft897? Sp / SP-Br?
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Re: Windcamp WLB 817 - recharge with a charger for LIPO
The papers you gave the link to applies to that type battery ONLY. Each different type of Lithium battery takes a different charge voltage as well as current. The types of chargers we use in the RC Field has settings for most of the varieties, LiIon, Li-Poly and other Lithium?chemistries. The types of Chargers we use are CPU controlled with software settings for the type batteries that is being charged. The Li-Ion battery in the Windcamp? kit or those made like it that are made for the FT-817 have a controller PCB that not only charges the battery but also protects it from over charging and from over discharging the cells.? That type of system requires a constant and regulated voltage and current. Again that is due to the control board attached to the battery. A battery without a control board requires a specific charger made for it Also the "C" rating of the battery has to be considered when charging. The "C" rating of a battery is used to determine the charging current used. Our RC Club and others in RC has used multiple types of Lithium batteries and Chargers for over 10 or more years. May I suggest to anyone who does not really know how to use, charge or handle any of the Lithium types of batteries contact your local Radio Control Club members. We or they have used, charged and handled these batteries for many years. We do not know everything due to many new Lithium chemistries being used in new batteries, but we do keep up on them. If you intend to use them also, PLEASE, make sure you use the appropriate Chargers, charging containers and know how to handle them. They ARE dangerous. No matter the Chemistry. Tom Lambert KC7BJE?
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Re: Windcamp WLB 817 - recharge with a charger for LIPO
BE CAREFUL! ? Li-Fe-PO4? does not charge the same as? Li-Po. ? Battery University ¨C a place where you can spend hours studying up on anything battery related. ? ? Vy73 - Mike - KD5KC. El Paso, Texas - DM61rt. SOTA W5T-Texas Association Manager. NA-SOTA info is at:? ? ? ? ? ?
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From: [email protected] < [email protected]> On Behalf Of Ron Wright via Groups.Io Sent: Saturday, November 16, 2019 9:32 AM To: [email protected]Subject: Re: [ft817] Windcamp WLB 817 - recharge with a charger for LIPO ? Here is one article on charging LiFePO4 batteries.? It is from a company who is probably going to try to sell you a charger, hi, but seems good info.  ?
| | How to charge Lithium Iron Phosphate lithium ion battery packs includi...High capacity LiFePO4, Lithium Iron Phosphate batteries. |
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Spring Hill, Florida
146.64 repeater, 1100 ft HAAT On Saturday, November 16, 2019, 11:11:29 AM EST, John-G0GCD <g0gcd@...> wrote: I'm following this with interest because, although I don't have exactly the same question as posed above, I am looking for some way to charge the LiPo without using mains AC, i.e. from a 12v dc source.
I have a unit to lift 12v to 15-16v without difficulty, rated at around 6A but I haven't been able to find the correct technique for charging LiPo batteries.
Constant current or constant voltage, or a combination of the two, over a timed interval?
If anyone could point me towards suitable text, that would be great, and if someone knows what signals the red led on he wallwart to turn green, that would be a start!
Thanks
John G0GCD
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Re: Windcamp WLB 817 - recharge with a charger for LIPO
Perfect Ron, very useful, many thanks.
Noted Roger. In my early days at Philips, I witnessed the effect of a NiCd battery pack being overcharged. The pack's internal wiring insulation melted and the energy released from the resulting short circuit of the?cells blew a 4inch diameter hole through a very substantial bench. A good lesson learned early in?my career. I am aware of the?more recent press regarding incidents of Lithium batteries releasing their energy in explosive ways too! Extra care? Certainly...
Thanks all
John?
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Re: Windcamp WLB 817 - recharge with a charger for LIPO
It is some time since I used Lithium-Ion batteries professionally and I have no idea if Li-Po batteries are different.
What I DO remember is you have to be VERY careful charging Li-Ion packs. They can be little bombs unless very carefully charged. I would STRONGLY advise using a properly designed charger.
As I said, I have no experience of Li-Po packs. What I do recall was that about 1 in 150000 Li-Ion packs failed and product recalls were a nightmare and very expensive. Is it any wonder computer makers and mobile phone makers are very scared of recalls?
I know of at least one person who had her flat burnt down whilst charging a mobile phone unattended.
All I am saying is treat Lithium Ion cells with great care. Do NOT be tempted to take shortcuts. It could cost you your home or life.
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Re: Windcamp WLB 817 - recharge with a charger for LIPO
John,
Here is one article on charging LiFePO4 batteries.? It is from a company who is probably going to try to sell you a charger, hi, but seems good info.
73, ron, n9ee/r Ron Wright, N9EE/R Hernando Co ARES EC
BSEE Micro Computer Concepts Spring Hill, Florida
146.64 repeater, 1100 ft HAAT 352-835-5610
On Saturday, November 16, 2019, 11:11:29 AM EST, John-G0GCD <g0gcd@...> wrote:
I'm following this with interest because, although I don't have exactly the same question as posed above, I am looking for some way to charge the LiPo without using mains AC, i.e. from a 12v dc source.
I have a unit to lift 12v to 15-16v without difficulty, rated at around 6A but I haven't been able to find the correct technique for charging LiPo batteries.
Constant current or constant voltage, or a combination of the two, over a timed interval?
If anyone could point me towards suitable text, that would be great, and if someone knows what signals the red led on he wallwart to turn green, that would be a start!
Thanks
John G0GCD
?
|
Re: Windcamp WLB 817 - recharge with a charger for LIPO
I'm following this with interest because, although I don't have exactly the same question as posed above, I am looking for some way to charge the LiPo without using mains AC, i.e. from a 12v dc source.
I have a unit to lift 12v to 15-16v without difficulty, rated at around 6A but I haven't been able to find the correct technique for charging LiPo batteries.
Constant current or constant voltage, or a combination of the two, over a timed interval?
If anyone could point me towards suitable text, that would be great, and if someone knows what signals the red led on he wallwart to turn green, that would be a start!
Thanks
John G0GCD
?
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I like my little Elecraft, works great, tiny package.
Good luck,
Jay
WB2QQJ
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Clyde Lambert
Diodo Retificador