I'm doing some testing of the battery charging that my bluetooth intercom does to the small LiPO cell within (400mAh).
I am using a hobby charger linked to my PC which worked great for the discharge as you can watch the graph build.
When I came to recharge it I realised that this hobby charger does a terrible job of recharging LiPo's. I thought the charger was fully programmable but it seems it is not. You have a small window of voltage adjustment for each battery type and that's it.
So now my only option seems to be to use my bench PSU and DVM to fully charge this battery manually.
The desired charging scheme is 0.2C constant current until 4.2 volts is reach and then switch to constant voltage until the charge current drops to 0.05C.
So that's 80mA CC untill 4.2v is reached and then hold CV until current drain drops below 20mA.
Nearest thing I can find would be an adjustable TP4056 Charger Module but it'd be great is there was an actual product that could do this which recorded the mAh charge and maybe interfaced with a PC to draw nice graphs or at least store measurements.
Is there anything on the market or is it time to learn Arduino?
Many thanks for reading, Rich.
I am using a hobby charger linked to my PC which worked great for the discharge as you can watch the graph build.
When I came to recharge it I realised that this hobby charger does a terrible job of recharging LiPo's. I thought the charger was fully programmable but it seems it is not. You have a small window of voltage adjustment for each battery type and that's it.
So now my only option seems to be to use my bench PSU and DVM to fully charge this battery manually.
The desired charging scheme is 0.2C constant current until 4.2 volts is reach and then switch to constant voltage until the charge current drops to 0.05C.
So that's 80mA CC untill 4.2v is reached and then hold CV until current drain drops below 20mA.
Nearest thing I can find would be an adjustable TP4056 Charger Module but it'd be great is there was an actual product that could do this which recorded the mAh charge and maybe interfaced with a PC to draw nice graphs or at least store measurements.
Is there anything on the market or is it time to learn Arduino?
Many thanks for reading, Rich.