New Products! 3.7 v 4400 mAH Li-Ion Battery & USB Li-Ion/Li-Poly Charger v 1.2
EmilyKurze
Posts: 127
3.7 v 4400 mAH Li-Ion Battery
This lithium ion pack is made of two balanced 2200 mAH cells for a total capacity of 4400 mAH. The cells are connected in parallel and spot-welded to a protection circuit that provides you with over-voltage, under-voltage and over-current protection. The protection circuitry keeps the battery voltage from going too high when charging and too low during use, which means the battery pack will cut-out when completely dead at 2.5 V.
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USB Li-Ion/Li-Poly Charger v 1.2
This USB charger is great for DIY projects and uses a standard A to mini-B USB cable to connect to any computer or USB wall adapter.
This Lithium Ion/Lithium Polymer charger is based on the MCP73833. Charging is performed in three stages: a preconditioning charge, then a constant current fast charge, and finally a constant voltage trickle charge to keep the battery topped off. The fast-charge current is 500 mA by default, but is easily adjustable from 100 mA up to 1000 mA by soldering a through hole resistor on-board.
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This lithium ion pack is made of two balanced 2200 mAH cells for a total capacity of 4400 mAH. The cells are connected in parallel and spot-welded to a protection circuit that provides you with over-voltage, under-voltage and over-current protection. The protection circuitry keeps the battery voltage from going too high when charging and too low during use, which means the battery pack will cut-out when completely dead at 2.5 V.
Read more...
USB Li-Ion/Li-Poly Charger v 1.2
This USB charger is great for DIY projects and uses a standard A to mini-B USB cable to connect to any computer or USB wall adapter.
This Lithium Ion/Lithium Polymer charger is based on the MCP73833. Charging is performed in three stages: a preconditioning charge, then a constant current fast charge, and finally a constant voltage trickle charge to keep the battery topped off. The fast-charge current is 500 mA by default, but is easily adjustable from 100 mA up to 1000 mA by soldering a through hole resistor on-board.
Read more...