old lead acid battery

Lead Acid Battery

February 7, 2020 Nigel 0

The Lead Acid Battery is a battery with electrodes of lead oxide and metallic lead that are separated by an electrolyte of sulphuric acid. The overall reaction is: PbO2 + Pb + 2H2SO4 <=> 2PbSO4 [more…]

nickel metal hydride battery

Nickel Metal Hydride Battery

February 5, 2020 Nigel 0

The battery has a nickel-hydroxide cathode, a metal hydride (a variety of metal alloys are used) anode, and aqueous potassium hydroxide electrolyte. This is a rechargeable battery chemistry that has been superseded by lithium ion, [more…]

lithium ion battery schematic

Lithium Ion Battery

February 4, 2020 Nigel 0

In a rechargeable lithium ion battery lithium ions move from the negative electrode to the positive electrode during discharge, and back when charging. The cathode is a lithium transition metal oxide, eg manganese or cobalt [more…]

Off Grid Power

December 3, 2017 Nigel 0

I was wondering what I could run off grid and wanted to start with an off-grid phone experiment, not really that radical, but more something for me to test the latest technology and to do [more…]