Luna is offering a variable rate charger to optimize cell life in the 60 volt X2.5 battery. Stopping a basic charger at 80% is difficult , with the twist of a dial you can control the rate of charge and also control what voltage the charger will stop 

Slowly charging any lithium cell will increase the overall life expectancy of this expensive battery

This special connector is only for the new 60 Volt X2.5 battery

• 60V (16S) charger max voltage 67.2
• Designed for Lithium ion battery packs
• Quality 5 amp-450 watt charger
• ON/OFF Switch for easy shut off
• 80%90%100% shutoff options
• Smart charger keeps your pack safe and maximizes its life span
• Automatically shuts down when pack is full
• High quality fan runs quiet and is reliable
• Anodized Black aluminium case
• 110v AC input for North America,
• 4 pounds
• 8 x 3.5 x 2 dimensions

The Luna Charger adds life to your pack without taking a wad of money from your pocket.

Features: 

     - Charger is configured with reverse polarity, over current, over voltage, and short circuit protections.

     - Fuse protected

     - Precise limit of voltage and current, intelligent control, and avoids over charge.

     - Simple Dual LED indicators : LED 1 is RED shows power is on, LED 2: red shows the battery being charged. Or green shows the battery fully charged