3.2 lipo battery cell, transformer 3 to 12 volts

20 watt 22.4volt 1.14 amp solar cell recharging a 3.2 volt lithium iron phosphate 100 Amp/hr cell .

Manual on a dead cell. .65 volts start. Mostly trying to see if it will revive.

 

Twin 3.3 cells. 6 .5 volts at 40 amp.
Right cell is 12.7 off a 1 amp buck converter.
Left cell is 12.7 off a 4 amp
Buck converter on the top lid
Converts 1.14amp 20 volt solar.
Into a 8 amp 3.45 volt charging voltage.

 

The battery cell always fooled my digital charger into thinking it was a 1.2 volt ni-cad. Got it up to 2.65 on the 20 volt solar. Now attempting to charge at 3.5 volts 6 ramps with the solar powered buck converter.
Solar charged up to 2.90 volts at dusk.
Set up for 8 hour tonight on a 1 amp lithium digital charger. Built for the D cell size 36660 traditional battery cells.

Mostly to see how long it will hold a charge.