I use one of these
http://www.graupner.de/en/products/8...4/product.aspx
Upgradable software, vast memory, mains or battery up to 10 amps charge on both chargers (need a 20 amp power supply for the full 10 amps on both) can charge your transmitter, use for your tyre warmers, brushed motor run in
Awesome bit of kit
