The VAR20 Battery Charging Management Module is the heart of the AptiVolt system of Battery Management.  It take power from the AptiRail only if it is available and supplies it to the battery it exclusively manages only if it needs it.
 
- 4 stage rapid battery charging
- 5 choices of battery chemistry
- 3 levels of Priority
- Up to 20A charging
- Temperature probe option
- Displays charging current
- AptiLoop enabled
- Powered from AptiRail
- 98% efficient converter
- Very low battery drain
​- Button set-up for Priority and Chemistry.
- AptiLoop set-up for reporting and serial data control.