Wiring for LiFePO Battery

[Farzad_k]

Hello.

The first thing I am doing to my new 6thGen Hybrid is to figure out wiring for my auxiliary battery that will be charged using the REDARC BCDC1225D charger. I will be drawing from the startup battery, but I am trying to figure out if I can place the additional 30 amp demand on the DC/DC charger that brings power to that end of the vehicle. The REDARC can produce only 25 amps but it can technically draw 35 amps to provide the 25 amps at 12 volts.

I don’t think this would be a problem. If anyone has already done something similar I appreciate any suggestions.

Farzad

 

[Peter_Offroad]

I am interested in the answer as well. I am working on doing a similar thing for a trip I am about to embark on. The difference is I have both a Victron 110V charger (30A @ 12V) and a 50A 12V DC to DC converter (programmatically set to 8A input so as not to overload the cigarette lighter) - as redundant approaches, in the hope one will work out. Note: Still building and testing it.
What I have read, is that if the lower spec Hybrid 4Runner (eg Off Road Hybrid) does not have the AUX switches installed from the factory, then it does not have the alternator installed (https://www.4runner6g.com/forum/thr...tor-to-the-iforce-max-hybrid.3853/#post-53338, https://www.4runner6g.com/forum/thr...-in-the-2025-gas-motor.5053/page-2#post-65125, https://www.4runner6g.com/forum/thr...r-output-and-dc-to-dc-system.4846/#post-62475). This means all power for 12V is coming from the Hybrid system - which may limit its current, at least for longer uses like charging. For higher power needs, you may want to add the alternator - it seems.
Note: in adding a brake controller, I have seen that the wiring harness is there for the Aux switches - needs the switches, fuses and relays - and now I understand also probably needs an alternator.