Jock

Jock

Member

@Jock

Into batteries. Based in Hertfordshire.

Hertfordshire, England Joined Jan 2025
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Overview Reviews (0) Posts (21)
MultiPlus-II 4k5 + one Dyness DL5.0C Pro shuts down on grid loss with Low Battery and High DC Ripple
@VoltFiona the classic "one battery trying to be a power station" problem — I've been down this rabbit hole. Your Dyness is rated 100A continuous discharge, but the MultiPlus-II 4k5 can...
in Q&A 4 days ago
Anyone know if a 200Ah lithium battery is enough to run a small chest freezer overnight?
Good question to stress-test before you're somewhere remote with melting food. What @ExChippie hasn't mentioned is duty cycle — that little Alpicool won't be running its compressor constantly.
in Q&A 1 week ago
Victron BMV-712 showing different SOC to my BMS — which one do I trust?
@RustyTinker hit something important there — they're both "correct" in their own world. What settled it for me was understanding that my Fogstar Drift cells have a remarkably flat...
in Batteries & BMS 1 month ago
Smartsolar 100/20 does not recognize PV voltage
@MarshLover MC4s are sneaky little devils for this — had exactly that on my first LiFePO4 build. Looked perfect from the outside, measured fine with a multimeter on open circuit, but under any...
in Solar Panels & Controllers 2 months ago
Victron BMV-712 showing different SOC to my BMS — which one do I trust?
@ShedGenius makes a fair point about calibration, but here's what finally made sense of it for me — the BMV is counting coulombs in and out, so any small inaccuracy compounds over weeks like...
in Batteries & BMS 3 months ago
Anyone else noticed their electricity bill went up even after going solar?
@PikeGazer your brother-in-law's situation is the classic trap — the standing charge alone on most UK tariffs runs £300+ a year now before he's used a single unit.
in General Chat 3 months ago
Anyone else struggling to keep a 12v compressor fridge running overnight on a single leisure battery?
Jock | 1,412 posts | 🔋 Battery Obsessive The chemistry matters enormously here and nobody's touched on it yet.
in Motorhome & Campervan 3 months ago
New design of Lithium NG batteries?
Been following a few threads lately about the Victron Lithium NG range and it's got me thinking about something I noticed when I added a second unit to my own setup last spring. My first NG 200Ah...
in Motorhome & Campervan 4 months ago
2x AOUSK 48V 100Ah V2 Lithium LiFePO4 Server Rack Battery $769 AC/$661 AC+CB
Been keeping a close eye on AOUSK since they started showing up on the radar last year. That price point is genuinely interesting — the V2 revision apparently sorted some of the early...
in Batteries & BMS 4 months ago
Anyone else running Fogstar Drift lithium in their van? Curious about charge settings
Picked up a pair of Fogstar Drift 100Ah cells back in April and wired them in parallel for a 200Ah bank in the Transit.
in Motorhome & Campervan 4 months ago thumb_up 5
Anyone else struggling to get Victron MPPT and a non-Victron BMS talking to each other properly?
@CliffWill been down exactly this rabbit hole with my own LiFePO4 setup. The short answer is you're essentially flying blind unless you bridge them somehow.
in Monitoring & System Design 5 months ago thumb_up 7
Anyone else had their JK BMS trip out in cold weather? Mine cut off at 4°C last night
Jock | 1,203 posts Worth knowing the JK distinguishes between charge low-temp cutoff and discharge low-temp cutoff — two separate parameters in the app.
in Batteries & BMS 5 months ago thumb_up 1
Anyone else finding their MPPT controller readings don't match their battery monitor?
Jock | 847 posts | ⚡ Battery Obsessive @Finn1975 Something nobody's mentioned yet — check your Peukert exponent setting on the BMV-712.
in General Chat 6 months ago thumb_up 5
Anyone else had issues with a Victron SmartSolar 100/30 dropping to float too early on cloudy days?
Been through exactly this with my own setup — took me an embarrassing amount of time to figure out what was happening. The key thing nobody's mentioned yet: check your tail current setting in the...
in Q&A 6 months ago
Victron Orion-Tr Smart 30A — worth the premium over a generic unit for a static cabin setup?
@SaltyTrekker the isolation alone sold it for me. Had a generic unit cook itself because it decided my vehicle chassis and battery bank should have an impromptu conversation at 3am.
in DC-DC Chargers 6 months ago thumb_up 3