Hi Everybody
As I could not find a reasonable solution reading through the internet. I am wondering if I might get some advice here...

I am a fresh owner of a defender 110. It's got a dual battery system (2x AGM) under the drivers seat. Now I am building up a camper for overlanding. Regarding power supply for the auxiliary part (fridge, laptops, lighning ect.) I would prefere to set up a LiFePo based auxiliary system. So far so easy, but: I also have a winch in need of lot of power... So (as far as I could find out) two ways to go:

1. Supply the winch only by the main (car) battery. And run an auxiliary LiFePo based power system connected via booster etc. (in danger of winch sucking the main battery empty in minutes)
2. Keeping the AGM based dual power supply (and link the batteries parallel in case of winch use). And run an auxiliary standalone auxiliary power system (not linked to the cars generater only solar for exemple)

How do you handle the power supply of winches and auxiliary power supply for camping use? Is there a possibility to run a 'three battery system' (main AGM), bridgable second (auxiliary AGM) battery for further car and winch supply and also charged/connected third (auxiliary LiFePo) for camping/living/working issues? How would you connect such a system to the generater of the car? Are there charging booster for three batteries??

How did you solve your power supply regarding camping AND winching?

Many thanks for your insiration

 

Overlanding rarely requires a winch. When you are utilizing your vehicle as your home away from home..."most" serious overlanders rarely put their vehicle at risk of serious injury caused by 4-wheeling. Granted, you may get into a situation where you might need your winch, but two batteries and a healthy alternator should handle mild use of the winch. Plus, if you are running LED lighting on most of your auxiliary lighting (interior and exterior)...battery drain is minimal. Sure, shut off blower motor, radio (especailly, if you've added an amplifer) and headlights (if old school bulbs) and any other non-important accessory, while winching.

l'll be running two 1000 CCA batteries, and l can't imagine having an issues. Had a monster 1140 CCA battery in my D2 and winched quite often, and it was never an issue. Sure, don't go crazy winching, let the alternator do it's job to help replenish the battery when doing long pulls. And use a ****** block when possible, it helps pay-out more cable and your winch doesn't work as hard. The first wrap of cable is where you want to be using most of your pull with, leaving about four or five wraps around spool, the second and especially the third wrap around the spool loss strength, considerably.

Basically, if you are going to be, quote, 4-wheeling in dangerous situations...you are usually better off going with a couple more vehicles. Twisting an axle shaft or boogering up something 1000 miles from home is no fun. There is enough that will go wrong, under normal conditions, especially in an old defender...that taking chances is foolhearted.

Anyhow, post up some pictures of your 110 and welcome to the forum!