The Onyx 200 is great for electric car or boat modelers. With charge rates from 1.5 to 5 amps, it can safely and fully charge batteries ranging from 750mAh "AAA" batteries and nitro receiver packs, to the biggest sub-C NiMH packs and many things in between! Great for 1/18th to 1/8th scale electrics, nitro receiver packs, and more! A tiny, lightweight built-in switching AC power supply plus DC input capability is perfect for use at home or the track. Easy to see LEDs and audible tones make it easy to track the charge status at any time.