There are external battery chargers out there that can charge your battery if it matches the specs on the size and voltages of your battery.
Here's an example of one:http
/www.amazon.com/PA3634U-1BRS-PA3817U-1BRS-PA3818U-1BRS-PA3819U-1BRS-PA3870U-1BRS/dp/B00FIJYLYE