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Hello all, in the spirit of re-opening this discussion, i'm going to be reporting every step of the way in my Lead-Alum builds, even if it looks like a monologue. maybe this will be of use sometime. I have finished building from scratch a small 12V battery, using the same mix described by bedini. i formed it all night using the sg, and now the voltage sits around 12.4V. after 3 discharge/charge cycles, the battery gets better and better both in amp/h and in top voltage. The Vdrop at the first discharge (load is a a 12v fan, drawing 100Ma) was from 12.4 standing to 9.5V discharging. it took 10 mins to reach 2.6V. i stopped there because that's the voltage the fan stopped spinning. then i decided to charge it using the sg in OSCILLATOR MODE, the charge was a lot faster.the stand voltage was 12.6V, and the Voltage dropped to 10.69 upon discharge (a significant improvement.) these cells don't seem to mind an overcharge, as long as i keep a breathe hole open for the gas to come out (the battery is completely sealed) and can be brought down to 0. i do see crystals forming in between the plates, which is a confirmation on the effect bedini described where the sulphate crystalizes, preventing it to stick to the plates...
Ok, on the old 2V cell, i did a test to find out what happens if you charge and discharge at the same time. i used the SG to charge and an SG oscillator to discharge. it ran for nearly 12 hours, and held a steady voltage of 2.0V and after i disconnect everything, the standing V was 1.9V steady, dropping a few millivolts once every minute or so, wich is normal in any case, at least in my cells. These cells don't seem to mind being charged and discharged at the same time! further testing needs to be done to confirm this.... i think this is important based on the statement by Peter L. that says that the normal batteries don't like to have this done... please correct me if i'm wrong. here's some pics of the new 12V:
Ok, on the old 2V cell, i did a test to find out what happens if you charge and discharge at the same time. i used the SG to charge and an SG oscillator to discharge. it ran for nearly 12 hours, and held a steady voltage of 2.0V and after i disconnect everything, the standing V was 1.9V steady, dropping a few millivolts once every minute or so, wich is normal in any case, at least in my cells. These cells don't seem to mind being charged and discharged at the same time! further testing needs to be done to confirm this.... i think this is important based on the statement by Peter L. that says that the normal batteries don't like to have this done... please correct me if i'm wrong. here's some pics of the new 12V:
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