Would this charge a battery once

[Old Timer]

If this was fully charged would it charge a 24V or 36V e bike battery once do you think Heavy-Duty 6-in-1 Jump Starter with Invertor and Radio : In-Car Battery Chargers and Compressors : Maplin

Dave

 

[Fecn]

It says the battery inside it is a 12v, 17Ah = 204 Watt Hours... and then the inverter on there would only be about 85% efficient... plus the bike's charger would be about 85% efficient... So you'd get about 147 watt hours into your bike battery.

Not enough to fully charge any e-bike battery out there, but enough for a top-up.

 

[Old Timer]

It says the battery inside it is a 12v, 17Ah = 204 Watt Hours... and then the inverter on there would only be about 85% efficient... plus the bike's charger would be about 85% efficient... So you'd get about 147 watt hours into your bike battery.

Not enough to fully charge any e-bike battery out there, but enough for a top-up.

Hmm! better with my 300W inverter then?

 

[Fecn]

Yep - the inverter is a far better option. That way you can always start the car's engine and burn some fossil fuel to get extra watt-hours.