Recent content by ocular

There does seem to an overzealous attempt by the DC-DC charger manufacturers to push LiFePO4 4S systems to 14.4 - 14.6V and then float. Certainly in the off grid world most would not be pushing their cells above an equivalent of 14.0V. Some of the manufacturers of LIFePO4 4S packs also...

Presume it's an android phone. What PC <----> Android App/software do you use?

Our resident Laplander recommends some special goo that is anticorrisive and helps conductivity.

And finally a new version of the JKBMS with features of the "industrial" grade BMSs - includes active balancing and firmware upgradeable and inverter comms. Be interesting to see if any bugs in the first release version. https://www.aliexpress.com/item/1005006014535487.htm (pre-order)

JK active balancer gets switched on manually when 16s pack gets to 56V and delta V is > 30mV -50mV maybe X2 /yr aiming for <10mV

Still not fully charged. If you want to really want know how balanced cells are need to push total voltage to 55-56V. Most full time active balancers are set not to activate when cell voltages are less than 3.4V

My recollection from my learned mates on this forum is that EVE from last year now make their original labels branded with a "B" for grade B to try and stop resellers upselling them as A (automotive) grade.

@Mariner62 how are the B Grade cells supplied by Luyuan performing?

What batteries and BMS are you putting in the Luyuan Box?

"Airswitch" is that the on/off button for the JK BMS? Looks like it must have an extension lead go from from next to the screen on the front panel to the JKBMS module that is located behind the negative terminal? Normally the lead on the on/off switch for JKBMS is only about 6 inches long. Is...

Those terminals are maybe similar on the Luyuan battery box? seem to be rated at 100A per connection and are M6. The doubled connectors on each polarity don't appear to be connected. https://m.alibaba.com/product/1600679245045/100A-M6-screw-21MM-Spacing-Through.html

Here is their store. No dealings with them. https://omdxnybattery.m.en.alibaba.com/index.html

How much current max will you be likely drawing Maybe see if these thru wall terminals of your liking could be procured instead? https://www.alibaba.com/product-detail/IP67-Waterproof-High-Current-200A-Energy_1600476891281.html

Means nothing when av cell voltage is only 3.29V. What is delta V at 3.5V?

So it should only be necessary to connect to battery on input side and and most +ve balance wire to Out+ and -ve balance wire can stay on balancer