Search results

About 4 yrs ago, I watched Will Prowse assemble LiFePo4 cells and I jumped in to the tune of about $2500 to get 16 cells. I have a grid connected/battery backup solaqr system at my sugarhouse (maple syrup). I assembled the 16 cells in series, used a BMS that claimed to shut off at just above...

I've been charging at the 2V PB setting so far, but it is very slow. Seems hard to get the voltage over 1.8. Tomorrow I have time, I will try setting up the ATX power supply. I bought some variable resistors (2@100ohm variable) and 2@25 ohm) that I hope will drop the voltage enough to get the 5V...

My son has an ATX power supply, not sure, he needs to check on a resistor for the 5V post. I think I will try this method.

I'm just heading out to work now, I will look into that later. One of my sons is an IT at a private corp. working for a local college, he or his team repair computers, maybe he will have an old ATX power supply. Is it a bad idea to connect 3 cells in series and first put 6V to them, then 8V, I...

I'll try, the charger I bought has a max in PB of 5A, 2V to keep them separate until they get higher. At that it might take 16 days or even more (I have 16 cells). If I could assemble them into 4 packs I could do the 5A at 12V, then I have another lead acid charger with a 2A and a 10A setting...

You are right, I went .1A, .2A, .3A, .5A, 1.0A, 1.5A, 2.0, 2.5, 3.0 and then 3.5A. It appears I can increase faster. so for the battery is at room temperature, and the charger is only very slightly warm, just enough to barely feel the warmth above room temp. In tomorrow's trial I think I'll go...

We are staying right here with it. 15 minutes in, no heat build up in either the charger nor the cell. Cell took .14 volt so far. I started the charger at just .1A. Unless someone sees an issue, I think I'll go to .2A when the cell gets to 1.9V and then step up from there slowly, until I get to...

While I see what is being claimed, then why did I see, (on Will's video) that my 16S bank should be set to run between a top of 53V and a low of 50V for the longest life? That is between 3.125 low and 3.3125 high. What does the higher voltage do to the optimal life span?

I'm starting the charging of cell #1 today. I think I will shut charging down before we go to bed and see what voltage I have in the morning and go from there.

The Tenergy TB6B charger has settings for lead acid as well as other chemistries.

There is no swelling. They have been like this since Jan 19, 2020, when I discovered the inverter had shut everything down. On Jan 15, 2020 the battery bank was at 52.8V and the CC and inverter were OK. It happened sometime between 1/15 and 1/19 when I discovered the shut down.. They had a BMS...

I bought 16 cells, Sinopoly 100AH prismatic cells. They all read 3.30V when new last fall. I drew them down to 3.0V and then connected all in parallel to bottom balance them. Then I connected them to my system, 1480 watts solar, a XW 6048 inverter, an SCP (system control panel) and a XW 60-mppt...