Tagged: lithium battery

A real daily amp-hour budget for family vans: fridge, kids' tablets, lights and the dog's fan, worked out from our own numbers on the road.

Solar panels cost nothing to run but everything upfront. I've broken down the real annual cost of powering a Big Lap rig across solar, genset and fuel.

Before you buy a bigger fridge or a bigger battery, do the maths. Here's how I actually size a 12V fridge to a battery bank for family touring.

A 200Ah AGM and a 100Ah lithium can run the same fridge. Here's the maths on usable capacity, cycle life and real cost per amp-hour over time.

A day-by-day power budget for solo touring off one battery bank: what a fridge, water pump, lights and a laptop actually draw, and where the sums fall apart.

Most dual-battery setups are sized for the brochure, not the track. Here's how to work out what your rig actually draws before you buy anything.

A 60-litre and an 80-litre compressor fridge draw differently in real heat. Here's how to actually match fridge size to battery and solar before you buy either.

Solar panels are free once fitted, but running a caravan's electrics on the Big Lap still costs real money. Here's where it actually goes.

Buying a used off-road van? A pre-purchase electrical check catches the faults RV inspectors and brochures skip. Here's what I actually test.

A voltmeter reading 12.6V tells you almost nothing about how much charge is left. Here's why a shunt-based monitor earns its keep on any 12V rig.

A compressor fridge that cycles off on corrugations or after a hot day usually isn't faulty. Here's how to actually diagnose 12V fridge dropouts.

Lithium vs AGM caravan batteries compared: usable capacity, weight, cycle life, cost, solar and DCC charging, and cold-weather limits, with a clear table.