Recent content by Luk3jay

It's something like this that I ended up using in the end

Okay, scratch that. It turns out that the BT module has no memory, and the log is made on my phone whilst the app is open, which isn't very often. So the app history is basically useless.

Thanks. This is the exact meter I've been looking at bit I was dubious as I hadn't heard many user examples of them. It looks like exactly what i need, and reading the instructions, it's also possible to integrate it with the smart control system that I'm developing. I'll make an order as soon...

Also a point to mention: the SOC (orange line) jumps around a fair bit on the top left. This is because, as I adjusted various settings, the SOC reading bounced around. Therefore, this chart is probably inaccurate. I'll have to wait until i get a full 100% SOC for any more accurate charts.

Good to know. I've adjusted the SOC parameters as follows (i did it before your post) so will see how this goes. Yes. I'm working on it. This chat came from the BT module which isn't normally connected (i have a screen in the van and only use the BT for programming) - i have left the module...

So I may have found it, There's this parameter which sets the battery to 0% at a predefined cell voltage. (2.9v) There is also voltage targets(for want of a better word) for 100%, 80%, 60%, 40% and 20% So I assume that when the cell voltages hit one of those 'target' voltages, the SOC reading...

That's my lfp battery. The tracker also shows 'main battery' which is the engine battery. What should the discharged voltage be? If you are referring to the right hand side, ignore that. That is the solar coming in in the early hours, but not being strong enough to charge the battery (but it...

SOC update: We used loads of power last night and took the battery from 60% down to 22% when we went to bed at around midnight. I didn't get a cell range reading at 22% unfortunately. When we woke up around 7am, the bms was showing 0% and had disconnected discharging. My tracker gives me...

Thanks. So it sounds like my mains and Dc-Dc charger are set too high at 14.2v then? As for the solar, I'll have to re evaluate it all when i can connect the laptop as I didn't think that lfp used 'boost' charging modes.

3270-3276 at 90%. Thanks. When I'm next with my download lead I'll tweak my settings and report back. I have never noticed the resting voltage above 13.5v, even when using the mains or the dc-dc charger which both charge at 14.2v, but I'll double check next time. I'll be doing a lot of driving...

3266-3274 at 40% SOC. (taken straight after a 100a load which is I think why there's a big cell difference) 3219-3223 at 37% SOC (charging at 3a) 3027-3052 at 42% SOC with a 90a load.

Currently 3277-3282 at 50% SOC. I'll be full soon so will update when charged. I'm trying to stay alive 50% on the road but will update when it drops. Thanks :)

Hey all, sorry for my silence! I've been without internet. I'll reply below. Thanks for your help! What should the resting voltage be? it tends to be around 13v. Currently the BMS monitor screen shows 13.05V with a load of 6.2A and a 71% SOC The BMS screen stayed on and working the whole time...

Hi, I built a 200ah LFP battery at the start of the year (see other post on here) and it's been performing pretty well. It lives in my camper and it's recharged by 350w solar and a 30a dc-dc charger. It has a constant load of around 2a as well as the fridge which pulls an additional 5a for a...

Thanks. Unfortunately that won't work for me as i need one that can interface with other systems, or at least show history. I'll keep that in mind for other projects though.