Sterling Power Bi-directional Battery to Battery Charger 12V 40A – BB1240

Product Details

Sterling Power Saturn BB1240 12v 40amp battery to battery (DC to DC) charger 

The BB1240 is able to charge in both directions provided there is over 13.2V on the leisure battery (13.5V if lithium) and the starter battery is below 13V the BB shall allow approximately half current (~20A) 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.

Features

• Buck Boost design, offering high efficiency (95-98%)
• Simple installation and setup
• Current limiting charger
• Lithium safe
• 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

Specifications

• Manufacturer Part Number BB1240
• Voltage 12V
• Cont. Output Current 40A
• Efficiency 95-98%
• Dimensions H150 x W130 x D56mm
• Weight 0.8Kg
• Warranty 2 Years

We aim to pack and ship all of our our orders on the same working day.

Some of our large kits and systems can take longer

If goods are not available we will try to contact you as soon as possible to advise availability or an alternative part.

Please note we do not ship orders on Saturdays, Sundays or Bank Holidays

If you would like to order an item to be delivered on Saturday please contact us for shipping costs.

FREE SHIPPING OPTIONS

Orders over £75 can be sent FREE using Royal Mails 48hr Tracked service (2-3 working days).

UK Shipping Fees

Royal Mail 48hr Tracked service at £4.50 per order
Royal Mail 24 Tracked service is charged at £6.50
DPD next working day service is charged at £9.95

All orders needing next working day service with DPD will need to be ordered before 10am for us to book, process and pack this service with DPD. Any orders placed after 10am might be sent the next working day if we can not get them booked and packed in time but if urgent please contact us as we will always try our best to help.

Please note that some UK adresses including the Highlands and Northern Ireland will usually be a 2 Day Service.

All The above delivery information is for UK mainland deliveries only.