Hello, here is my 2nd thread.
I ve done about0.5-0.6KWH of4S5P and 4S10Pbattery ( 4 battery )from laptop cells with bms, all is working great
Now i m installing all the 12V outdoor lights ( LED ) and i can't continue because i m afraid of something.....
My lights and battery are okay, but i ve 2 unused solar panels that i don't use (too much for my roof ) it produce in a range of 30-37V DC ( using/not usingvoltage ) at a max of 7.5A.
I have a solar regulator who give me 24DC 20A, and my battery are 14.4V ( 16.8V in charge if i don't make mistakes ).
My question is : is that dangerous to use a DC-DC voltage adjuster to down the voltage at 16.8V and use it to charge the battery's ?
I mean : is it not a problem to let the BMS cut the battery when overcharged ?
also it bring me to another question, does it exist on ebay/aliexpress or something like that ( because i am in france, not US ) a solar regulator who can stop when batterys are full ( special for lithium ) i m afraid that the BMS deffect and makes batterys burn ! ! ! ( it is outside but if it don't burn i prefer :
or does it exist a small chinese pcb who can accept 24VDC and charge my batterys at 16.8v and stop ?
any advices are great
Sorry for my english, i m french and english is not my best part at school
I ve done about0.5-0.6KWH of4S5P and 4S10Pbattery ( 4 battery )from laptop cells with bms, all is working great
Now i m installing all the 12V outdoor lights ( LED ) and i can't continue because i m afraid of something.....
My lights and battery are okay, but i ve 2 unused solar panels that i don't use (too much for my roof ) it produce in a range of 30-37V DC ( using/not usingvoltage ) at a max of 7.5A.
I have a solar regulator who give me 24DC 20A, and my battery are 14.4V ( 16.8V in charge if i don't make mistakes ).
My question is : is that dangerous to use a DC-DC voltage adjuster to down the voltage at 16.8V and use it to charge the battery's ?
I mean : is it not a problem to let the BMS cut the battery when overcharged ?
also it bring me to another question, does it exist on ebay/aliexpress or something like that ( because i am in france, not US ) a solar regulator who can stop when batterys are full ( special for lithium ) i m afraid that the BMS deffect and makes batterys burn ! ! ! ( it is outside but if it don't burn i prefer :
or does it exist a small chinese pcb who can accept 24VDC and charge my batterys at 16.8v and stop ?
any advices are great
Sorry for my english, i m french and english is not my best part at school