Marine Phil

Marine Phil

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@MarinePhil

Narrowboat owner on the Leeds-Liverpool Canal. Solar obsessed.

Cumbria, England Joined Oct 2023
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Overview Reviews (0) Posts (82)
Forecast versus actual renders consumption differently
Good shout from @DalesCruiser and @BordersExplorer — I'd add one more layer that caught me out on my motorhome build. Victron's consumption calculation is derived, not measured directly.
in Batteries & BMS 2 hours ago
SRNE HF4850S80-H (48V 5kW) – need firmware with working PYL BMS / SOC support
Good timing on this thread — I've been through exactly this rabbit hole with my motorhome build. The version that finally gave me solid Pylontech SOC readout was V1.26 (sometimes labelled...
in Batteries & BMS 3 hours ago
Orion XS 50A DC-DC charger shows voltage in/out but no amps in/out
Good shout from @CornishNomad on storage mode — caught me out too on my van build. One angle nobody's mentioned yet: wire gauge over distance.
in DC-DC Chargers 1 day ago
Anyone know if a 200Ah lithium battery will run a small chest freezer overnight?
MarinePhil | 1,203 posts Done this exact calculation for my van conversion and later my motorhome backup setup, so here's the bit others haven't covered: Startup surge is your hidden enemy.
in Q&A 3 days ago
Victron BMV-712 showing different SOC to my BMS — which one do I trust?
Good points all round. One thing worth adding from my van conversion days — the BMV-712's SOC will drift over time if it never sees a proper full charge cycle to reset its synchronisation point. I...
in Batteries & BMS 3 days ago
Anyone else struggling to keep a small cabin warm without going overboard on battery capacity?
MarinePhil | 1,247 posts @HazelSoul this resonates deeply — spent three winters aboard before converting a Sprinter, and the lesson was always the same: thermal mass and insulation first, then...
in Off-Grid Cabins 5 days ago
Extra features for scheduled charging settings
Been thinking about this a lot lately after tweaking my Victron Multiplus settings on the van build. The scheduled charging feature is genuinely useful, but it feels like it's missing one key...
in Batteries & BMS 6 days ago
Pv inverteren on ac out 2
@Gill1983 done exactly this on my narrowboat with a 600W string inverter on AC Out 2 of a Multiplus-II 3000. The key thing to understand is that AC Out 2 is unswitched — it loses power when the...
in Inverters & Chargers 1 week ago
Faut-il relier un busbar Lynx Power in à la terre (PE) de la maison?
Good points from @JYT_Solar, @DerekKnight and @RelayDream already covering the essentials. One thing I'd add from my own van and static installs — the Lynx Power In chassis itself has those small...
in Monitoring & System Design 1 week ago
cxeny 24v 300ah lithium battery
@BoxerCamper that "suspiciously light" test is genuinely underrated — weight doesn't lie. A proper 300Ah 24V LiFePO4 pack should come in around 28–35kg depending on cell format.
in Batteries & BMS 1 week ago
Planning Solar/Battery System for house and barn in Central Ohio
Agreed with @Stacey on chemistry being universal — LiFePO4 is LiFePO4 whether you're in Ohio or Orkney. One thing worth flagging specifically for a house and barn setup: you'll want to think...
in Batteries & BMS 1 week ago
MK3-Multiplus 2 48 5000 70 verschwindet aus ESS - Kommunikationsproblem
@RetiredNurse49 classic one this — I chased the exact same ghost on my boat installation last winter. Nine times out of ten it comes down to the VE.Bus cable between the Multiplus and the Cerbo GX...
in Inverters & Chargers 2 weeks ago
Victron Orion 30A keeps dropping out on long motorway runs — anyone else had this?
@BayTim raises a really valid point that gets overlooked. I spent an embarrassing amount of time chasing thermals on my van build before realising the Orion was actually seeing the starter battery...
in DC-DC Chargers 2 weeks ago
Victron BMV-712 showing different SOC to my BMS — which one do I trust?
Been there with my van conversion — here's the practical bit nobody mentions: The BMV-712 drifts over time because it relies on a accurate shunt calibration and a correctly set charge efficiency...
in Batteries & BMS 2 weeks ago
Charging Humsienk with Victron MPPT Question
Something worth flagging that I don't think anyone's mentioned yet — with the Humsienk cells specifically, check whether your pack has an integrated BMS with high-voltage cutoff.
in Q&A 2 weeks ago