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  1. Classifieds
    Bought it on this form about a month ago and never got around to install it. Would like to get my money back. $800 plus shipping. Located in San Jose, CA
  2. Batteries and Charging
    Hello all, I've come across a large number of good laptop batteries containing mostly CGR 18650CG and CGR18650D Batteries, with capacities of 2250, and 2350 mah respectively. Recently our golf cart was left out on low charge in the cold, and many of its lead acid batteries are now dead. Time for...
  3. Batteries and Charging
    Hi Everyone, I've visited this forum often when researching for my ebikes and the UK solar car, but today I'm a first time poster! I would like to introduce you to my start-up's first kickstarter campaign. Our product, the "Batlab" fills a need in the hobbyist/small-professional markets for use...
  4. Batteries and Charging
    I am building a 18650 li-ion battery pack for my electric motorcycle. It has over 1000 cells and will hold over 9kWh of power. I am running the cells at a 1C discharge with peak discharge of 3C for no more than 30 sec. I am wondering if air cooling will be sufficient or if anyone has ever tried...
  5. Batteries and Charging
    I was looking for some LiFePO4 18650 cells to replace the dead NiCDs in a Ryobi 18V portable drill, and I found some 2500 mWh NiZn AA cells for $32 for 16 pieces. http://www.ebay.com/itm/16-pcs-2500mWh-1-6V-Volt-AA-2A-NiZn-Rechargeable-Battery-PowerGenix-/151256251587 This works out to about...
  6. Batteries and Charging
    I just finished a discharge test on one of the Li-Ion cells I bought on eBay at the price of $14/4 pieces including shipping. It is rated for 3600 mAh but my test as received showed only 530 mAh. Here's what I did: Now I need to charge it (while using the datalogger), and then another...
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