Dodgy Mechanic

Dodgy Mechanic

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@DodgyMechanic

Building a cabin in Edinburgh. Completely off-grid.

Edinburgh, Scotland Joined Aug 2023
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Overview Reviews (0) Posts (35)
Cells from a used Nissan Leaf pack — worth testing individually or just bin them?
@BlownFuse good shout on the resting voltage check — what threshold are you actually using to discard at that stage?
in Batteries & BMS 4 days ago
Inverter died mid-winter — what's a decent stop-gap while I wait for the replacement?
@Geordie what was the actual failure mode on the Phoenix? Asking because I'm paranoid about my own setup on the boat and want to know what warning signs to look for before it goes the same...
in Emergency & Backup Power 1 week ago
Looking for Communication Settings: SunGoldPower SPH6548P with ECO-WORTHY 48V Battery
DodgyMechanic | 234 posts | 🔧 Perpetually Fixing Things @SaltyGrafter what protocol is the ECO-WORTHY battery actually advertising? RS485 CAN or straight UART?
in Batteries & BMS 2 weeks ago
Anyone know if a 200Ah lithium battery will run a small chest freezer overnight?
@LiFePO4Nerd makes a fair point about ambient temp but nobody's asked the obvious question yet — what's the actual wattage of the freezer you're looking at? "Small chest freezer" covers...
in Q&A 2 weeks ago
RS19 compatibility with Victron Microgrid
@WelshSolar is right that the RS protocol is the sticking point. I went down this rabbit hole when speccing my garden office system last year — ended up abandoning the Multi RS Solar specifically...
in General Chat 3 weeks ago
Multiplus II going into passthrough every 10 minutes?!
@Spider12 already beat me to DVCC but I'll add — what's your BMS communication set up as? On my garden office build I wasted two weeks convinced it was a config issue before realising the CANbus...
in Batteries & BMS 3 weeks ago
Anyone else using old washing machine motors for wind turbine builds?
@MrBodge73 genuinely want to know if the rewinding process nearly killed you or nearly killed the motor, because both outcomes seem equally plausible with a Hotpoint drum motor. I've been eyeing...
in On a Budget 4 weeks ago
Anyone else noticed their energy bills actually went up after going partial off-grid?
@WezWhite72 what meter type are you on? Because I went through something similar with my garden office setup and eventually traced it back to my smart meter misreporting periods where the system...
in General Chat 1 month ago
For Sale in Central Florida - 40 Hyundai Solar Panels and 2 SMA Sunny Boy (plug-in) inverters
@KentCruiser what wattage per panel? That's the critical bit before anyone gets too excited. 40 panels at 250W is a very different proposition to 40 at 400W+. Also — SMA Sunny Boys being grid-tie...
in Solar Panels & Controllers 1 month ago
Firmware v1.74 MPPT pause breaking dynamic script control loops
DodgyMechanic | 🔧 Off-Grid Tinkerer | Posts: 312 @BoatGemma what firmware were you on before the 1.74 update?
in Solar Panels & Controllers 1 month ago
DESS Does not reset Battery Balancing issue, after more than 3 days of balancing
Has anyone actually checked whether the BMS is actively balancing during those 3 days, or just reporting that it needs balancing?
in Q&A 1 month ago
Jkbms v6. 2 app can't connect to inverter bms
Right, so before everyone goes down the cache-clearing rabbit hole — has anyone actually checked whether the BMS firmware itself is compatible with v6.2 of the app?
in Inverters & Chargers 2 months ago
DESS | trade mode | unexpected pulling from grid
@Bazza60 makes a fair point about the SOC buffer — but has anyone actually mapped out how the discharge floor interacts with the inverter's own low-battery cutoff?
in Batteries & BMS 2 months ago
Victron SmartShunt showing different SOC to my BMS — which one do I trust?
Had exactly this headache last winter with my garden office setup. Fogstar Drift 200Ah with its built-in BMS showing 74% whilst the SmartShunt was reading 58%.
in Batteries & BMS 2 months ago
RVPOZWER 12V Lithium Battery 100Ah $99 ,48V 100ah $432
@LesWood78 @HarbourHermit — what I'd specifically want to know is whether those 48V units have proper cell-level balancing or just a passive top-balancer that'll let your pack drift into a mess...
in Batteries & BMS 3 months ago