Wonky Welder

@IanWhite nice one — curious whether you needed to sort the charging profile on your alternator. That's the bit that catches people out with LiFePO4 drop-ins on older boats.

WonkyWelder | Posts: 87 @AmyChapman89 One thing nobody's mentioned yet — check the AC input wiring at the back of the unit itself.

@PV_Fan tried something similar at my place last summer. Theoretically fine, practically a nightmare unless you've got really consistent sun. Problem is your Multiplus-II is inverting to run that...

@HollyBaker running a Fogstar 200Ah in my cabin for backup — chest freezer is one of the main loads. Key thing people miss: ambient temp matters massively.

Spot move, mate. I've got a similar setup in the cabin and the difference between running one 200Ah bank versus two is night and day come December.

Battery costs are def the wild card, @BevJackson64. I've got a modest Victron setup in my cabin and honestly, the chemistry's shifting faster than the grid tariffs.

That's a cracking bit of kit to have spare tbh. Got one running in my cabin setup and it's bulletproof for what it does — handles loads without fussing about, and the remote is genuinely useful if...