Battery Questions

[Mudzuki]

Thinking of going with a sinle battery setup in my zook, will hve to cover cranking, running motor, lights and winching. Looking at running an Optima Yellow Top D31A, 900cca

Do you have to upgrade the cars wireing to deal with the bigger battery, i think no, but freinds say yes. The load that is pulled from the battery is still the same, so no need to upgrade, correct?

Does the same apply if i upgrade the alternator? Looking at around 100amps from a rewind, so im thinking the cable that is used now is for about 40 amps, so i think this could use an upgrade, correct?

Cheers
Richard

[cloughy]

you should upgrade the wiring from the battery to the alternator as the current output will be greater aside from that , that's it

[murcod]

I've just upgraded the alternator on my Feroza, and thought I'd be smart and upgrade the cable going from the alternator to the battery at the same time. When I went to start it after the rewire most things inside were dead.... but no blown fuses and power was available at the fuse box in the engine bay?!

Turned out somewhere along the cable from the alternator -> battery that there's a T junction that feeds into the cabin. So check if this is the case with yours before starting a rewire.

You may also find a fusible wire link near the battery in the alternator cable- make sure you incorporate this into the new cable. It will just be a thinner piece of wire near the battery +ve (or you may possibly have a big mother fuse there?) Either way reuse them with the new cabling.