jdeadman
Member
- Joined
- Mar 28, 2017
- Messages
- 967
Hi All,
I am currently working on a replacement for 2 Flooded lead Acid batteries I have out at camp with 18650's
What I've got
- Cheap 20A PWM charger controller but has been good for the lead acids last year.
-around 100 x 18650's so far about 1/3 above 2000mah the rest between 1500-2000
-3d printed cell holders from a nice customizable CAD file from thiniverse.com
- Going to start with a Bank of about 20Ah @ 7s to be charged from 4 panels (2 40W and 2 60W in 2s2p)
- Fusing both sides of each cell and I am going to run a BMS just not sure which one as of yet. Or arduino Based
- 24V to 12V buck converter to run my camper as I only use 12V out there and I have zero need for AC.
- Charging the cells for testing with a bank of 8 TP4056's and Discharging with a Hyperion RC battery charger/Discharger - this allows me to Discharge @ 10A for my 20Ah packs in a more real world application
I hope to keep this as cheap as I can but still having a safe Pack build
I'll post picks as I go but just playing with the little time I have (3 kids lol)
I am currently working on a replacement for 2 Flooded lead Acid batteries I have out at camp with 18650's
What I've got
- Cheap 20A PWM charger controller but has been good for the lead acids last year.
-around 100 x 18650's so far about 1/3 above 2000mah the rest between 1500-2000
-3d printed cell holders from a nice customizable CAD file from thiniverse.com
- Going to start with a Bank of about 20Ah @ 7s to be charged from 4 panels (2 40W and 2 60W in 2s2p)
- Fusing both sides of each cell and I am going to run a BMS just not sure which one as of yet. Or arduino Based
- 24V to 12V buck converter to run my camper as I only use 12V out there and I have zero need for AC.
- Charging the cells for testing with a bank of 8 TP4056's and Discharging with a Hyperion RC battery charger/Discharger - this allows me to Discharge @ 10A for my 20Ah packs in a more real world application
I hope to keep this as cheap as I can but still having a safe Pack build
I'll post picks as I go but just playing with the little time I have (3 kids lol)