So I am building a velomobile and I am fine on the artistic side but I was hoping to get a little help from you experts on the charging side as I have all ready paid for the solar panel and charger controller to install and am picking it up on Monday in LA. I bought a battery from Ebay Seller: power_battery_a123 and it seems to be fine even precharged. It pushes the 500 watt 36 volt motor kit I just installed perfectly however the language barrier is a little hard to deal with. When discussing the option of using a 36 volt 1.5 amp charger instead of the 36 volt 3.0 amp charger it came with he was saying it needed voltage in the 40s range and he only carried the 3.0 amp charger. Here are the specks for the battery
Fit 36V Motor Wattage: 400 Watts to 800 Watts, 500 Watts suggested
（if you need high Watts, please email us to advisory )
Voltage: 36 Volts
Capacity: 20 Amp Hours
Dimension: 345 x140x110 mm
（If need other sizes, please contact Me to advisory )
Weight: 9.20 kg
Charging Voltage: <46 Volts
Charging Current: <5 Amps
Rated Discharging Amperage: 20 Amps
Max Continuous Discharging Amperage: 40 Amps
Maximum Discharging Current (Peak): 60 Amps
Lifecycle of the whole pack: >85% capacity after 1000 cycles.
Lifecycle of single cell: >85% capacity after 1500 cycles, >70% capacity after 3000 cycles. (<1C discharge rate and <1C charge rate)
The solar panel I bought is 60 watts I was going to use a sixty watt inverter powered from the load section of the solar controller that would be hooked up to the battery and panel. While driving the panel would run my LCD, and speaker system, lights, blinkers, horn, and such when stopped it would run the inverter powering the 36 volt 1.5 amp (54 watts) charger. The charger that came with the battery says output 36 volts 3.0 amp. I have a 36 volt 1.8 amp charger (65 watts) that came with the amped bikes kit as well so chime in if I can use this with am extra 10 watt panel and a 70 watt inverter. It is called intelligent Battery Charger AA-AK02-3618 it says output 36 volts 1.8 amps and Apply to batteries 36v 20ah to 22 ah. So finally can I use the 1.8 charger or does anyone know where I can find a 1.5 amp 36 v charger that will work with my lifepo4 battery? I'm just about out of money until I sell my 300 mbz veg burner so I would like to start riding asap. Thank you all for your wisdom.