Further to my last post, here are some typical 2 and 3 cell boards.
73s
Ross
Sent from my iPhone 6
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On 9 Aug 2023, at 13:14, Afghan Kabulldust via groups.io <kabulldust@...> wrote:
?To all QRP Labbers,
Power supplies have been discussed ad infinitum on the forum so I thought I’d put my two -penneth in!
You can get numerous 3cell 12V and 2cell 8.2V LiPol charge/discharge controller boards for next to nothing on internet shops or other sources. Same with 18660 cells, those here are 3000mAh. All sorts of capacities are available.
See attached a very simple 12V 3000mAh battery for portable use. (And I use at the home station to reduce qrm/qrn from mains supply as well) quite few hrs of operations and they charge quite quickly.
Wrapping in polyimide tape for electrical and heat protection. Safe light portable where
12V= 12V or
9V = 8.2V
You won’t blow your QMX or QDX with these unless you have shorts on the board somewhere. Test power socket using DVM R - diode measurement before connecting a small but high current battery pack. V on R-diode should be 1.8 V when you press the left rotary encoder switch before you connect ANY power source. Anything less that that voltage on diode test means you might be in for a BANG and smoke!
I hope this all helps.
73
Ross
T61AA/EX0AA
WSPRing since March 2008 from Helmand Afgh!
Sent from my iPhone 6
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