johnb80's latest activity

And then you go and spoil it o_O

BMW have announced a recall of 432,000 cars after a driver tried to use the indicator.

Absolutely agree, no problem at all. Can you see the BMS parameters? Some won’t start balancing until a threshold voltage is reached...

I wonder why the dip and kick in cell voltage shown between 99 and 100% isnt reflected in the curves for 12, 24 and 48v packs? 20% and...

Hi All, I'm working on a design for an attic hoist / elevator that will be used for getting boxes etc up and down. We have installed a...

There would be greater losses in the wiring, the need for thicker cables and frankly, it's not worth it. SWMPSU's are so efficient the...

What I have found out is the 100% at the top only makes a small difference to longevity of the cells and it's only whilst it is at 100%...

Yep, been there for sure. FWIW, grade B cells dont make grade A because they have a higher internal resistance and/or lower capacity...

John Ruskin Said: “It's unwise to pay too much, but it's worse to pay too little. When you pay too much, you lose a little money -...

Aye the 600v will hurt, the danger with the high voltage and high current from the batteries is of course the ability to cause real...

I commissioned my DIY battery on 24th December, 2022 so that I could hopefully cook Christmas dinner off grid. I did achieve that much...

I purchased my cells in May 2022. The numbers seem a little odd there, 6 modules wired in series at 50v each would give 300v into your...

Further to the above, attached here are PDF's of the battery housing, anyone is free to use them for personal use, I have also put the...