12V to 24V 120A input | 60A output Battery to Battery Charger w/ reverse charging feature
12V to 24V DC to DC Chargers 120A input and 60A output model - E-Marking | BB1224120
Use discount code sterling15 - for 15% off.
Remote control BBR - Optional remote
- Buck Boost design, offering high efficiency (95-98%)
- Simple installation and setup
- Current limiting 4 stage battery charger
- Lithium safe
-~50A reverse charge current to 13.3V
- 12V to 24V
- BB1224120 - 1700W of output charging power - based on 59A at 28.8V
Smart Alternator/Euro 6 compatible
- Ignition feed or Vibration Sense modes
- 6 preset battery types
- 6 self recovering protections
- Low temperature trip for Lithium Ion batteries
BB1224120 Reverse Charging Feature.
Watch video about the Jump Start feature
The BB1224120 is able to charge in both directions. Provided there is over 26.4V on the leisure battery (27.0V if lithium) and the starter battery is below 13V the BB shall allow approximately 40A to flow back to the starter battery up to about 13.4V (float voltage). It simply allows the starter battery to remain topped up when there is surplus energy in the domestic battery. This feature will NOT drain your domestic battery - it simply takes surplus. Once your alternator / engine turns on or you provide the BB with an ignition signal the BB reverts to normal charging of the leisure battery. This mode can be disabled, but is on as default.
This is ideal for allowing the starter battery to remain topped up when you have solar / wind / charger - charging up your leisure battery.
Battery to Battery Charger Remote Control - BBR
BBR comes with 4m extension cable
What does the BBR offer?
Why adjust the current limit?
The default current setting for the BB range is 100% - meaning that the performance default is full power. If you wish to reduce the performance of the BB, here you can set to 85% or 65% charge rate. Examples of why you may wish to reduce performance:
Input voltage range: 9V-16V
Output current rating: 60A at 29V