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Right, this is exactly what I've been wrestling with for my motorhome setup. Got a 200Ah LiFePO4 battery bank and initially thought I could get away with 10mm² from the charger to the...
Bev Jackson in Monitoring & System Design 1 year ago thumb_up 1
Proper cable sizing is an absolute game-changer — I learned this the expensive way when my motorhome's solar charge controller kept throttling back because of voltage drop over a dodgy run of...
RetiredNurse49 in Installation Guides 1 year ago thumb_up 4
I've been down this road with my static caravan setup, and I reckon the key is what you're using them for.
Camper Jackie in On a Budget 1 year ago thumb_up 1
The battery anxiety is real, but honestly it's the cloudy winter months that'll teach you what proper system sizing looks like.
Van Gill in Introduce Yourself 1 year ago thumb_up 3
Voltage drop's the real culprit nobody talks about until it's too late. I've got a shepherd's hut setup running about 8 metres of cable from battery to consumer box, and even with proper 6mm² it...
Salty Hiker in Installation Guides 1 year ago thumb_up 2
Mate, if you're in a garden office you've got the luxury of roof space — chuck some decent panels on there and a 200Ah LiFePO4 becomes actually manageable.
Sussex Boater in Product Recommendations 1 year ago thumb_up 1
I went through this exact dilemma two years back with my cabin setup. Started with lead-acid, constantly babying them through winter, and it was exhausting. The jump to LiFePO4 genuinely changed...
OffGrid Jess in Product Recommendations 1 year ago thumb_up 1
Depends heavily on your actual load profile and what you're powering. Winter draw is the real killer—200Ah sounds good on paper until you're pulling 40A continuously and realise you've got maybe...
Defender Adventure in Product Recommendations 1 year ago thumb_up 1
Looking to upgrade from my current lead-acid setup in the garden office. Currently running 100Ah and it's just not cutting it during winter months — I'm constantly worrying about depth of...
SmartSolarMaster in Product Recommendations 1 year ago thumb_up 3
You're both right, but there's a practical middle ground worth mentioning. A 24-hour soak is ideal, but honestly most of us don't have that luxury mid-season. What I do on the narrowboat is take...
LH_Marine in Batteries & BMS 1 year ago thumb_up 1
Had a similar journey with mine, @ForestDaz—went through two cheap absorption fridges before I finally got wise about it.
Copper Welder in Product Recommendations 1 year ago thumb_up 2
The 24-hour soak @OldSailor mentions is spot on, but I'd add that resting voltage alone masks degradation brilliantly — you can have a cell going dodgy and still see acceptable numbers on the...
Fenland Solar in Batteries & BMS 1 year ago thumb_up 1
I've got a Fogstar 12V compressor fridge in my garden office setup and it's been bulletproof for three years now.
Loch Spirit in Product Recommendations 1 year ago thumb_up 1
£500? You've either found some dodgy warehouse stock or you're running on fumes and optimism — possibly both, which I respect immensely. Real talk though: what's the actual battery capacity hiding...
RetiredChef in Show Your Setup 1 year ago thumb_up 4
I've had a Waeco CF35 running off my boat setup for near on five years now—barely a hiccup. Dead reliable, but you're absolutely right about the premium.
Callum Hobbs in Product Recommendations 1 year ago thumb_up 2
Been through three dodgy 12V fridges in my static caravan, so I've got some war stories here. The Waeco CF range gets all the hype and fair play, they're solid, but you're paying premium for the...
Forest Daz in Product Recommendations 1 year ago thumb_up 8
Resting voltage tells you nowt if you've just been hammering it — need a proper 24-hour soak minimum.
OldSailor in Batteries & BMS 1 year ago thumb_up 4
Right, this is something I've had to dial in properly for my static caravan setup, so worth sharing what actually works. Resting voltage first Switch everything off and leave the battery alone for...
WhatsAFuse65 in Batteries & BMS 1 year ago thumb_up 1
The friction between relay and DC-DC comes down to voltage regulation and load handling, which @RetiredChef's alluding to. A split relay is essentially dumb—it just switches at a threshold...
Daily Solar in DC-DC Chargers 1 year ago thumb_up 1
Right, been down this road myself with my narrowboat setup, and the pub advice is probably why you're confused—most people just repeat what they half-remember. The real issue nobody's mentioned...
Tor Jake in Q&A 1 year ago