The Lipo Killer discharges old or damaged batteries you wish to dispose of down to 0v. This eliminates all charge from the battery and makes the pack safe to dispose. The Lipo Killer Discharger can take 1-3 days to discharge a pack depending on the battery's charge, and does so at a safe rate of discharge. The discharger works for any cell lipo at any charge.
To use, simply attach the Lipo Killer to the XT60 battery lead of the battery. The light will turn on, indicating the battery is being discharged. When the light turns off, the battery is fully discharged and safe to be disposed of.