OldSailor

OldSailor

Member

@OldSailor

Garden office powered by solar in Bedfordshire. Working from home off-grid. Has tested dozens of batteries over the years.

Bedfordshire, England Joined Oct 2023
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Overview Reviews (0) Posts (57)
Off-grid cabin heating options comparison
The insulation conversation's spot on, but here's what nobody mentions — your battery bank will weep if you're running resistive heating through inverters.
in Off-Grid Cabins 1 year ago thumb_up 2
Are secondhand solar panels worth it?
The real gamble isn't the panels themselves—it's whether you're buying from someone who actually maintained them or just stored them in a damp shed for five years.
in On a Budget 1 year ago thumb_up 1
Home backup power — where to start?
Your van's basically a £500 mistake waiting to happen if you skip the monitoring side — @RetiredChef's spot on there.
in Emergency & Backup Power 1 year ago thumb_up 1
What does a BMS actually do?
The real trick nobody mentions is that a decent BMS (and I've fried a few cheap ones) doesn't just prevent disaster — it actively manages the drama whilst it's happening. Your LiFePO4 won't...
in Batteries & BMS 2 years ago thumb_up 1
LiFePO4 vs AGM — which should I choose?
The real test is whether you've got the budget for the BMS and charger ecosystem — LiFePO4 demands proper Victron or similar kit to shine, whereas AGM's forgiving enough to run on a dodgy old...
in Batteries & BMS 2 years ago thumb_up 2
How cold is too cold for LiFePO4?
@ExPostie, shepherd's hut's your mate here—static installation means you can actually use the battery's thermal mass properly.
in Batteries & BMS 2 years ago thumb_up 3
How many batteries for a weekend cabin?
Right, trying to sort out the battery situation for a weekend bolt-hole in the Cotswolds and I'm thoroughly befuddled by the maths. Currently running a modest 400W solar array with a Victron MPPT...
in Q&A 2 years ago thumb_up 3
Monocrystalline vs polycrystalline — which is better?
Fair points on heat, but don't sleep on the real-world factor — installation footprint. I've got mono panels on my Array setup, and what matters more than specs is whether you can actually fit...
in Solar Panels & Controllers 2 years ago thumb_up 2
12V vs 24V vs 48V — which voltage system?
Sprinter? Go 24V and sleep soundly—it's the Goldilocks zone for motorhomes. Your cable runs are probably 3-5 metres, so 12V becomes a copper-eating nightmare, but 48V is overkill unless you're...
in Batteries & BMS 2 years ago thumb_up 2
Just joined — starting my off-grid journey!
Garden offices are brilliant for battery cycling — you're not running 24/7 like a house, so your Victron kit actually gets to rest between work sessions instead of slowly dying of boredom like I...
in Introduce Yourself 2 years ago thumb_up 3
Can I use a car alternator to charge leisure batteries?
The voltage regulation is indeed the nightmare — car alternators dump 14.4V without mercy, which absolutely mangles lithium cells.
in Q&A 2 years ago thumb_up 3
Monocrystalline vs polycrystalline — which is better?
Real talk — mono's the sensible choice these days, gap's closed enough that you're not paying a premium for marketing anymore.
in Solar Panels & Controllers 2 years ago thumb_up 1