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Hi, Does anyone know if there are alternative mobile (phone) apps for the JK BMS series? Or possibly apps that can be customized with graphics and so on? With regards, Martijn

Hi all, I'm fiddling around with Victron ESS (Energy Storage System). One of the 'issues' I was having, is that is was pushing full charging watts to the battery, which has a BMS not connected to the Victron system. This could result into the BMS disabling charging because cells would get...

Anyone got a picture?

Hi, My 280AH 24V battery seems to settle around 26.6V after charging. A few weeks ago, the solar was sometimes charging the battery, as can be seen below. The Victron Cerbo GX is constantly on, drawing 0.2A (about 5W). Last weekend, there was a sudden drop in battery voltage. It was going...

Hi, I'm creating an electrical system inside a camper body that has no metal connection to the vehicle chassis, it's made from glassfiber sandwich panels. The system includes a Victron MultiPlus II (with automatic ground relay and a 'shore power' input) and a Victron MPPT charge controller...

After some discussion in this thread, here's my battery build. bottom plate and end plates: 19mm ply 8 cells currently measuring 25.6v 8mm threaded rods to 'clamp', cells are snug, can't move em by hand .5mm phenolic paper as insulator between cells, while the cells are somewhat clamped, at...

Hi all, After just having read a thread in the 'up in smoke' forum, I wonder what you're tips are when creating a LiFePO4 battery for a truck camper. Here's what I currently have in mind: no specific 'compression' possibly still used threaded rods for fixation using front and back plates OR...

As Andy was testing the 48V JK BMS (click for video) on a 4S/8S system, you need a DC/DC converter. But, he also has a link available for an 7S-8S 24V BMS with 2A active balancing, see second entry: https://off-grid-garage.com/battery-management-systems-bms/ AliExpress links...

I ordered 8 cells (VariCore 280Ah), from the link in the video description by @Will Prowse - when they arrived I checked the cells. Some were not flat, others were not. I started testing, see the topic here. I never got close to 280Ah, even though there's a big white label on the cells saying...

Hi all, I couldn't wake the Daly 250A (no fan) BMS up with a load on the battery, so I shorted B- and P- as per some videos/threads. Some sparks, but still no luck. In the end, I used the two pins that can supposedly be connected to a button to restart the BMS. It woke up. However... I...

Hi, I've been searching these forums, but can't figure out how to monitor a DalyBMS with a different application than PCMaster. I'd like a graph with the voltage/load etc. Is there any software like this? Third party perhaps? With regards, Martijn

Hi all, So, I'm currently testing my 8 280Ah cells. I charged the individual cells to a certain point, which in hindsight shouldn't have done cause it takes way too long with a 10A power supply. So when I got the charger, I did a quick charge and then proceeded to top balance as per...

After over 50 days in transit, my 8 cells have arrived, two boxes with 4 cells each. No bulging, some scratches at the terminals, all cells measure 3.21 to 3.23V. The 6mm holes are so tiny, need to be careful with that thread. It seems the shop now sells with modified terminals ( see photo...

Searched, but couldn't find an answer. Would it be wise to fuse the balance/monitoring wires that go to the BMS? Or is there internal over-current protection in the BMS for these wires? I see additional connections (for the fuses) and some resistance. Yay or naye? With regards, Martijn

Hi, Not sure if 'busbar' is the correct word here, but I mean the flats/cables between individual cells in order to make a battery. I've seen this topic ( https://diysolarforum.com/resources/busbar-selection-table.104/ ) but I'm not sure what to make of it. I have trouble sizing the busbars...

Hi all, This forum is quite the resource! I've been reading through it but ended up with a few questions. I'm trying to figure out if I should build my own LifePO4 battery (that is the intention) for a camper conversion ( see www.bluebeastmog.nl ) of a Unimog. I'd like to go with a 24V 280Ah...