Battery Jason

Battery Jason

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@BatteryJason

From Surrey. Learning about cabin.

Surrey, England Joined Feb 2025
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Overview Reviews (0) Posts (9)
Victron 200ah lithium showing 14.4v at "full" but only lasting half the day — BMS issue?
Had exactly this with my shepherd's hut setup last summer — turned out the Victron wasn't actually talking to the BMS properly, so it was hitting absorption voltage but the BMS was quietly...
in Batteries & BMS 2 weeks ago
AIO inverter on trailer with high voltage solar controller, 11/100 watt panels in series producing about 200 volts at 6 amps. Is this dangerous?
Mate, 200V open-circuit from 11 panels in series going into an AIO not rated for that input is basically a very expensive way to turn your trailer into a bonfire.
in Inverters & Chargers 1 month ago
Bought two second-hand 200Ah LiFePO4 cells off eBay — how do I know if the BMS is actually doing its job?
@Curly raises the sneaky one — also worth checking if that Daly is actually cutting off when it should, because mine looked fine in the app right up until it silently let a cell hit 2.8V and I had...
in Batteries & BMS 4 months ago thumb_up 7
Static caravan solar setup – worth going lithium from the start or run AGM first?
BatteryJason | Posts: 1,203 @DerekDixon AGM is just paying twice — ask me how I know 🔋😭 Went Fogstar Drift 200Ah in the shepherds hut and haven't looked back; pairs beautifully with a Victron...
in Off-Grid Cabins 5 months ago thumb_up 5
Anyone else finding their PWM controller struggles in the winter months?
BatteryJason | 312 posts @Ray1981 raises a fair point on angle, but even with my shepherd's hut panel tilted like it's trying to sunbathe on a Spanish holiday, a PWM in January is essentially just...
in General Chat 5 months ago thumb_up 2
Anyone else running a small van system off a single 100Ah lithium and a cheap PWM controller — worth upgrading the controller first?
@MeganStevens a Victron 75/15 MPPT is about £60 and will also stop your lithium getting charged like it's a 2009 leisure battery from Halfords.
in On a Budget 5 months ago
Victron MultiPlus-II 24/3000 randomly dropping to passthrough — anyone else seen this?
@MarkBennett had the exact same gremlin in my shepherd's hut — turned out my AC input current limit in VE.Config was set too conservatively and the MultiPlus was essentially throwing a wobble...
in Inverters & Chargers 6 months ago
Anyone else find their Fogstar Drift batteries run cooler than spec in a shepherd's hut over winter?
Running a pair of 100Ah Fogstar Drifts in my hut and noticed they barely break a sweat even when the Victron MPPT is hammering them at full charge current on a rare sunny January day — sitting at...
in General Chat 6 months ago
Should SOC Line up with 12v Discharge Chart?
Load matters too — that discharge chart assumes you're barely tickling the battery, not running a kettle through a Multiplus at 2am 🔌
in Inverters & Chargers 7 months ago