Recent content by Critter350

Update. So 18 less than months on I’ve had a few issues. Cell #3 which is the replacement cell peaks and bottoms well ahead of the others, assume very different IR. Doesn’t really cause me a problem because my load in comparison to the size of the battery is tiny. But the Daly gave out. Volts...

Is there a trick to getting a response from Heltech? Been trying to buy a BMS off them for three weeks now, only had one unhelpful reply so far. Seems to be a different experience than others are reporting.

It’s been great for the last 18 months. Just kinda started misbehaving and no apparent event triggered it. I think the max load my system sees is about 10A, so maybe the 250A Daly is protesting cos it’s over qualified ?.

Yeah so if anyone is interested, the new normal seems to be that the Daly won't accept charge unless I reboot it using the app. Then it seems to charge fine until charge source disappears (eg turn card off and park in the shade / sun goes down. Seems to be a list to the number of times I can...

Hopefully this one's common enough that someone knows the answer... 4S 250A Daly smart, with Bluetooth, been performing excellent since putting it together 18 months ago, until it's not. The Daly seems to turn itself off - as it output drops to ~10V. Bluetooth still works, can connect to the...

Great setup. Back in the day I’ve measured valve spring pressure using drill press and bathroom scales… Depth stop to measure open height etc.

So had a crack at making my own out of 3mm aluminium. Case is 3 piece and sized to provide static compression. Assembled with depleted cells and packed in reasonably tight, so it will limit swelling. Box lined with Lino and thin vinyl sheet between each cell. Clear acrylic cover allows access...

Battery case.... bought a plastic case that looks really nice, a few other bits and pieces and the case would hold 4 cells & BMS, and look like a proper battery, just a bit bigger than N70. The ‘BMS wings’ are great- covering the exposed terminals and include a mount for the Bluetooth module...

Waking up the Daly without a power supply... I found this info elsewhere, but did it last night so can confirm it worked for me. AA battery (I used a 1.2V eneloop) between B- (+) and P- (-) will wake up the BMS. BMS looks for +0.6V difference between the two. The pin out on my 250A 4S looks...

So one weakness with prismatic cells is the threads in the soft aluminium terminals strip out very easy. The cells that Michael Caro procures have laser welded tabs with studs, 6mm stainless or 8mm zinc plated studs which fixes that problem but creates another. The tabs now create a stepped...

No need to repeat yourself John, I’m just posting my experience so that a)someone might point out a setting I have wrong or b) other readers can see they are not the only ones experiencing something. my cells are new and have been top balanced to 3.65V then left in // overnight. On first...

Completed first load cycle using 150W can inverter, two house fans and a lamp for about 95W. Also charged an 18V ryobi battery which pushed the load to 160W, easy for the battery but don’t want to burn out the litre inverter. At 270Ah the cell 4 LV shut down the load at 2.5V. Best cell still at...

I’ve still not seen the balance switch on. Have adjusted balance setting to 0.005V and have it on charge, delta V 0.009V.

Don’t bother disconnecting each sense wire from the cells. Unplug the white connector from the BMS unit. My assumption is disconnecting main power before balance plug pushes too much current through the balance circuit somehow. May not be correct but thinking of it in this way will help...

Very new to this too so take any comment with caution. Balance always gray- this is the reason I found this thread, looking for the answer myself. ‘Maybe’ it will come on when balance conditions are met- near top of charge and out of spec. SOC number - mine has sorted itself out with a charge -...