I've been doing research, watching videos & I am starting to salvage cells out of my old laptops. I also got a decent deal on ebay for a few laptop batteries. I am starting off small. I'm going to build small packs for a few things. Then a 24 or 48v inverter pack for my welding trailer to run grinders & other tools without having to run my generator.
I have only tested 12 cells so far from 2 of my old laptops. The Dell had better cells than the HP. I have been using a SKYRC B6 AC V2http://www.skyrc.com/index.php?route=product/product&path=20&product_id=217. I use the ChargeMaster for Windows to log the discharge curves. The ones form the Dell are red with green tops. They discharge at 1A for about 2hrs then for about 20 minutes it ramps the amperage down after getting to 3.2v. The cells from the HP are Panasonic. They discharge at 1A for about 1hr then ramp down the amperage for another 2+hrs. The total capacity is only about 200mAh different. But the red ones deliver alot more at 1A.
Is there a cheap program that will log multiple chargers on the same computer to be able to compare the curves & not just the total capacity to better match the cells in smaller packs?
I have only tested 12 cells so far from 2 of my old laptops. The Dell had better cells than the HP. I have been using a SKYRC B6 AC V2http://www.skyrc.com/index.php?route=product/product&path=20&product_id=217. I use the ChargeMaster for Windows to log the discharge curves. The ones form the Dell are red with green tops. They discharge at 1A for about 2hrs then for about 20 minutes it ramps the amperage down after getting to 3.2v. The cells from the HP are Panasonic. They discharge at 1A for about 1hr then ramp down the amperage for another 2+hrs. The total capacity is only about 200mAh different. But the red ones deliver alot more at 1A.
Is there a cheap program that will log multiple chargers on the same computer to be able to compare the curves & not just the total capacity to better match the cells in smaller packs?