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We're now open 5 nights a week with volunteer hosts Monday-Friday evenings 6-9PM. Key holding members have 24/7 access.

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My first lithium power pack. It's only 3.7 volts, but about 20 amp hour. 16 in parallel. These packs joined in series can make higher voltages. Bus bar on positive side and 5 amp fuse wire on the negative side.
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5/30/18
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3 scooters from Makerspace and Delta Bike Project: Razor e100, e200 and eZip e500. All 24V Pb (lead acid) batteries. Two batteries may be salvagable. 18650 lithium ion batteries available for conversion, 6S packs.
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scooters
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Fuse wire in from UK. For lithium pack build.
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Do you have a STEAM/Techie/Maker/Learning business that serves families with children ages 5 – 13 living on the San Francisco Peninsula? If so, consider showing your product/service to 5,000+ potential users at the 3rd annual STEAM Fest on the Square. Learn more and register at www.surveymonkey.com/r/STEAMBoothApplication
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Evolution. Battery cell now at 1W power. 1V or more at 1A. Anode is a piece of flattened aluminum angle about 2"x4".
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Finishing research phase of aluminum air battery. It's been 6 months or more of learning and work. Tank side for electrolyte and metal, copper side for charcoal cathode.
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2/21/18
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Lead acid 2V cell rated at 3500 mA was charged to 4350 mA or 124% of original rating. Negative plate modified with graphite coating. Time was 230:50 min when the Imax B6 freaked out and shut down.
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I've been building and researching batteries. Zinc air is the winner for diy. Military uses them in forward positions to recharge li-ions. They hold a lot of energy but discharge slowly. It's like emptying a municipal water tank with a garden hose.

What's hard to find and harder still to understand are the uses of euctictic molten salts in electric battery storage. LiCl + KCl (lithium chloride and potassium chloride)is the electrolyte that requires heating to a molten state. Now finally a use for the old TV projector lenses?
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