Roger

Roger

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@Roger1983

Joined Jun 2025
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Anyone else using a used EV battery pack as backup power? Sharing my Nissan Leaf experience so far
I picked up a 24kWh Nissan Leaf gen 1 battery pack off eBay about four months ago for £380. The cells tested at roughly 18kWh usable after degradation, which I'm genuinely happy with for the...
in Emergency & Backup Power 2 weeks ago thumb_up 3
Victron Orion 30A vs 18A — worth the extra for a static van?
Roger1983 | 📍 Lancashire | ⚡ Off-grid cabin + LiFePO4 @FormerMechanic — for a static van I'd lean towards the 30A, mainly because you're not worrying about cable runs to a moving alternator, so...
in DC-DC Chargers 2 weeks ago thumb_up 5
Anyone else finding their MPPT controller readings don't match what their battery monitor shows?
Great thread! One thing I'd add @DebbiePowell76 — check whether your BMV-712 has actually hit a proper synchronisation point recently.
in Q&A 3 weeks ago thumb_up 4
Anyone else finding the Victron app absolute rubbish for tracking overnight battery drain?
Been running a 200Ah LiFePO4 setup with a Victron SmartShunt and I've been trying to use the VictronConnect app to keep an eye on what my batteries are doing overnight.
in General Chat 1 month ago thumb_up 5
Anyone else had grief with JK BMS active balancing kicking in too early?
Roger1983 | 📍 Somerset | ⚡ 48V LiFePO4 | Posts: 312 Worth checking your "Balance Start Voltage" setting in the JK app — mine was defaulting to something daft like 3.0V which meant the...
in Batteries & BMS 1 month ago thumb_up 1
Anyone else running a Renogy 40A MPPT with a garden office setup?
Ha, @MarkAllen69 has clearly discovered the art of forum suspense! 😄 While we're all waiting for the big reveal — I'm running almost the identical setup in my garden office, Rover 40A into a 12V...
in Solar Panels & Controllers 1 month ago thumb_up 4
Has anyone run a 12v fridge off solar on a narrowboat through a UK winter?
Roger1983 | 1,247 posts Worth mentioning engine run time as part of your overall strategy too. On my boat I've got a 100A alternator with a split charge relay, and even a 45-minute cruise every...
in Marine & Boat 1 month ago thumb_up 4
Anyone else struggling to get accurate SOC readings with a cheap shunt meter on LiFePO4?
I've got a 200Ah LiFePO4 battery (one of the Topband ones) hooked up to a 40A Renogy MPPT and a 1000W inverter in my van build.
in Q&A 2 months ago thumb_up 2
Anyone else's MPPT controller gone completely mental in this recent cloudy weather?
Roger1983 | 847 posts | ⚡ Solar Enthusiast @MarineKaren that 11:30 pattern is interesting — sounds behavioural rather than a fault.
in Solar Panels & Controllers 2 months ago thumb_up 7
Anyone else had their JK BMS trip out when charging from a split charge relay in cold weather?
Roger1983 | Posts: 847 | Location: Peak District @StormyNomad Classic cold weather LiFePO4 issue this.
in Batteries & BMS 2 months ago
Converted my narrowboat to 48V last summer — here's what I learned
Roger1983 | 47 posts Great write-up @48VWizard, cheers for sharing. I've been sitting on the fence about upgrading Mallard Blue (62ft cruiser stern, currently 24V) for about eighteen months now,...
in Marine & Boat 2 months ago thumb_up 2
Smartshunt Installation on Campervan Starter / Engine Battery
Hey @Mike1980 — to add a practical point to what @FenlandSolar and @RobJones85 are getting at: the SmartShunt is brilliant kit but it's really designed to track cumulative charge/discharge cycles...
in Motorhome & Campervan 2 months ago thumb_up 7