• Standard 5.5mm plug fits most bottle, dolphin and shark battery cases
• 2 or 3amps (Support note: due to supply changes 2A version may be substituted if 3A is unavailable)
• For all 48 volt lithium batteries, charges to 54 volts
• Smart charger automatically shuts off when max voltage is reached
• This charger takes 110-240V AC input, can be used with both USA and international outlets

Luna Cycles is offering this Chinese charger at a very reasonable $35 price. This is a standard charger that will work with most 48v dolphin and bottle packs with a barrel plug.  The plug can be swapped out to be used with any 48v battery pack that needs a charger.

3 amps is a reasonable charge power for most battery packs, and charging at this level will make sure you get a long life expectancy out of your pack (the slower you charge the better for your pack).