Finally got my spare charger.
http://endless-sphere.com/forums/viewtopic.php?f=31&t=62545
It is a 1800 Watt Eaton APR48-3G. Very popular due its size/weight/power ratio.
The Weight is 1.5Kg compared to the 1,9Kg of the stock 500W charger and the form factor is much nicer too if you want to have it in a backpack.
Here is a comparison, from left: Stock 500W Charger, 1800W Eaton and 1500W Cherokee CAR1248FP:
Speaking of charging, With the stock charger at 6Amps I need 3 hours to fill stock 18Ah Pack.
With Eaton spitting out 21Amps the stock pack can theoretically be filled in just 51minutes.
I am charging with my 30A coil connected to Adaptto controller.
View attachment 3
This is how much it drains from the wall at 21A charing power:
Here is size comparison, Adaptto Max-e in the middle:
How to connect: