IDC25 Isolator & Optima D27F battery combo
IDC25 Isolator & Optima D27F battery combo
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This kit contains everything you need to hardwire a dual battery setup into your vehicle. 


These dual battery chargers from Projecta are the best DC-DC charges on the market today. They can handle all LV and Variable voltage alternator model vehicles as well as regular alternators.

These DC-DC chargers can be fitted inside the engine bay, making them much easier to install - especially in vehicles with both batteries in the engine bay. 

It also features a high quality MPPT solar charge controller for  direct connection of solar panels up to 400W, Mono or Poly compatible.


CHARGE TYPE:                                       3 Stage
MAX SOLAR INPUT:                               23Vdc, 385W
OUTPUT CURRENT                                Input  9-11Vdc  20A, 
                                                            Input 11-32Vdc 25A
BACK DRAIN ON AUX BATTERY:        9.5-10.5mA
12V: Turn On: 12.2-20V
24V: Turn On: 24.4-32V Turn Off: <11.9V 
Turn Off: <24V
12V: Turn On: 13.4-20V
24V: Turn On: 26.8-32V Turn Off: <12.8V 
Turn Off: <25.6V
-10°C to +80°C

The Optima D27F is a 12V 830CCA Dual purpose battery (Starting & Deep Cycle). The D27F Optima spiral cell design with the plates wound tightly around a central core gives exceptional vibration resistance (15 times more than most batteries).

The Optima D27F is an extremely tough battery, with huge cranking amps for its size. This high starting power, combined with cycling capability (in Yellow Top and some Blue Top's) makes an Optima an excellent choice for many applications. Fast recharging too with its Absorbed Glass Mat (AGM) design.

Optima D27F Additional Information.

Optima D27F Yellow-Top Details:

  • Width: 171.7mm
  • Length: 308.8mm
  • Height: 218.7mm
  • Weight: 24.1Kg
  • Voltage: 12V

The Optima D27F battery has a charged-up shelf life of 12 months or more, as compared to a normal flat plate battery that will sulphate in less than 6 months. The Optima D27F battery is deemed a non hazardous product for transport use, with no leakage or terminal corrosion. The D27F can be mounted on its side and will not gas under normal charging conditions.

If you need a battery tray click here for our complete range.