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I did my first 4s test build with Lishen 272ah and the BMS already saved me during load test. I had put some tape on the busbars to reduce risk of a short circuit. But I managed to have a little of the tape on one terminal between the terminal and the busbar. No issue at charging at 40A...

Do you see an option to Activate/De-activate the charging from the Alternator? More specific; In some cases I don't want to change from the alternator. For example when I know there will be enough sun later or I don't need the extra battery capacity in a near future. This to prevent unneeded...

My battery build is better if I turn the connector cables on the BMS - Daly smart 250A. I just did so; but I see some 'glue' between the connectors. It is slightly sticky stuff. What is this and should I re-apply it?

I used the app for the first time this month -android; it wasn't able to find the BMS. I saw there was an upgrade from beginning this month. I removed the apps storage (so the app was reset). Started it again, I didn't give access to location services and it still didn't work. Started it...

I ran a load test yesterday on a 250A Daly smart BMS without fan. I depleted a 4S 272Ah bank at about 2kw. After 30 minutes or so; the BMS cables started to heat up. Not extreme but they reached about 45°C. Measured with an infrared thermometer; but it felt hotter. The 2AGW Cables for 30cm...

What is the 3S or 4S in a BMS spec refering to?

Do we have here an overview of BMSs with the list of inverters compatible with them? If not I start once a thread. Walter

All, My Renogy 500A battery monitor was working fine. Now suddenly*, it started to show completely wrong currents ; 10-15 times too low. Before I formally start a warrenty claim at Renogy; is there any idea I could do to possibly correct it? As it is a very simple device - small resistor...

Hi All, Is there a Clamp current meter on the market that is able to measure 'energy' in Ah? All those I checked have just Current (A), not Current over time (Ah). Where is seems to me easy to add this feature. Any thoughts? I know there are brands with a app that has some monitoring...

For a given cell, is there any way one can predict the cycle life? I see manufacturers state numbers like 3.000 or 6.000 or whatever... But is there a test one can do to predict this number? The question also relates to the meaning of grade B; we all test the capacity of cells and are happy if...

Is there are 'simple' Battery monitor that can show the total battery voltage and the individual cells voltage? I am looking for such a thing for a 4S setup. Walter

I build a 4S, 12V, 272Ah battery bank. I charged the battery, did a capacity test and charged again. This is now what the BMS shows: It has total 0.25V difference between cells after loading. Is this bad? When I start discharging, the cells quickly equalize and difference becomes around...

I did set my Daly 4S 250 smart BMS to not charge below 5°C (not sure if it as of this value it will not charge or below this value). It was now 4°C and I turned on the heating in the camper van. After 1 hour the battery showed 12°C. I plugged in the camper van in the AC power socket but the...

What I find amazing on Ali; the reviews that start with 'as advertised' , "exactly as described '... I really admire these people. I already have problems figuring out what they exactly are selling from the descriptions. Mostly I have no idea what the product really does. But these people...

Is there somewhere a diagram that gives for a certain charge voltage the charge current for LIFEPO4 battery cells? I see mostly diagrams that give the battery voltage and current, but it is not clear is the 'battery' voltage here is equal to an applied charging voltage. Specifically during the...

Is there a BMS that integrates with an inverter but is only checking SOC? And not checking the individual cells? Reason; most of the BMSs -like 16S- don't support a dedicated list of inverters. But they work fine to monitor cells, do some balancing and protect the battery against over/under...

Risking that I ask something asked before... DALY Smart BMS 4S 250A... I build the 4S battery: without BMS it works fine against the 2.000W inverter. No I connect the Daly BMS. I followed the instructions in this manual: this manual So the simple steps: I connect BMS B- to the batteries...

I got 3 Daly BMS 250A 4S delivered today*. Is there a way to test them without a battery that is connected (I don't expect the cells within the next 4 weeks)? Like just I connect 'the ground cable and '4th' cell cable to the BMS to a 12V power supply' and it will wake up? Or is the only...

Hi all, I want to feel young again and build a battery system for the camper van from LiFePo4 cells... thanks already for the support on some -silly?- questions I will raise. cheers, Walter