? Charging Electric Bike Battery

Look on the charger for specs. Need to know the amps.

Better responses over in tech forum.

he also posted in FTS. try again.

The specs for that battery say max charging amps is 5 amp. A 400 watt inverter at 80 percent efficiency will give you about 9 amps @ 36v. So you will be OK. Some charger don't play nice with a MSW inverter, so get a pure sine wave inverter.

Well, you'll be pushing the limits of the cigarette lighter plug, and running your truck's battery down.

As your truck battery voltage drops, the Amps will increase to maintain power on the inverter side. It's a vicious cycle; more Amps makes the battery drain quicker, which makes the inverter draw more Amps, which makes the battery drain even quicker, and so on.

I'm personally not real big on inverters unless you've got a big battery bank and solar to recharge it.

^ Good point.

If you run the bike battery down to 50 percent charge, it will deplete your truck battery by approx 25 Ah to bring the bike battery back up to full.

Insufficient data. Check the INPUT watts or amps for your particular charger. They are all different proprietary chargers for each bike and each battery.

If you want us to guess...
Ebike batteries are easier to understand in watt-hours, because they are all of different voltage.
14.25 @36V = 513 WH, and it's not supposed to charge over 80-90% or to discharge below (don't remember, 20% or something). So, about 350WH will be be charged, 5 hours run makes it 70W power, i.e. 6A @12V. Make it 7A with inverter losses. Looks like within the limits of cig lighter socket, though I would rather connect inverter directly to coach battery.

7A @12V drawn for 5 hours will deplete your coach battery by 35 AH or more.

deleted.

You would be MUCH better off to get a small generator.....which can be used for other things too.

Sam Spade wrote:
You would be MUCH better off to get a small generator.....which can be used for other things too.

Maybe an Eu1000i or EX650 Honda.