Buying Guide
How To Choose Between LiFePO4 And Lithium Ion
LiFePO4 gives more than 2000 cycles at 3.2V per cell, lithium ion gives more energy per cell at 3.7V with about 500…
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Written for the engineer or buyer who has to specify the pack. Every figure quoted here comes from the data sheets published on this site.
Design Guide
Reading A Series And Parallel Code
What 4S17P, 3S9P and 1S7P mean, and how to work back from a pack code to voltage, capacity and…
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Comparison
Cylindrical Compared With Prismatic LiFePO4 Cells
When to specify IFR18650, IFR26650 or IFR32700 cylindrical cells and when to specify a prismatic LFP cell from 10Ah to…
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Installation Guide
Replacing A Lead Acid Battery With LiFePO4
Footprint, terminal, charge voltage and current checks for swapping a sealed lead acid block for a 12.8V LiFePO4…
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Maintenance Guide
Charging LiFePO4 Batteries Correctly
CC/CV charging for LiFePO4, the 0.2C to 0.5C normal current, the 3.65V per cell top of charge and the 0℃ charge…
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Design Guide
Choosing A Lithium Polymer Cell Size
Reading PL model numbers, allowing for the protection board, and picking from the 60mAh to 3000mAh lipo model…
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Comparison
When Ni-MH Still Makes Sense
Standard AAA to D cell sizes, appliance service packs and 1.2V systems where nickel metal hydride remains the practical…
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