Two Cell Li Ion Battery Charger

Switching solution for programmable charger.

Two cell li ion battery charger. Battery ocp battery uvp input current regulation input voltage. Up to 1 2 a continuous charge current. I should keep the 18650 batteries charged and when the main power goes off switch to the 18650 batteries. With a 500khz switching frequency the ltc4002 provides a small simple and efficient solution to fast charge li ion batteries from a wide range of supply voltages.

They combine high accuracy current and voltage regulation battery conditioning temperature monitoring charge termination charge status indication and autocomp charge rate compensation in a single 8 pin ic. The final application is a sort of small ups. Standalone li ion switch mode battery charger the ltc 4002 is a complete battery charger controller for one 4 2v or two 8 4v cell lithium ion batteries. A battery module like this will be very useful when powering our electronic projects with lithium batteries.

In this tutorial we are going to build a lithium battery charger booster module by combining the tp4056 li ion battery charger ic and fp6291 boost converter ic for a single cell lithium battery. I have a usb powered 3 7v lithium ion charger. So for a portable project i will be using two lithium ion 2200mah 3 7v batteries in series to give me 7 4v. The mp2615 is a high efficiency switch mode battery charger suitable for 1 or 2 cell lithium ion or lithium polymer applications.

You can power your laptop with this 2 cell lithium ion battery from dell. Safety charge timer during preconditioning and fast charge. Two cell li ion lifepo 4 the mcp73213 mcp73223 mcp73842 and mcp73844 are dual cell highly integrated li ion battery charge management controllers for use in space limited and cost sensitive applications. The mp2615 is capable of delivering 2a of charge current programmable via an accurate sense resistor over the entire input range.

When the power comes back the power switches back to the main adapter and the batteries can be charged. Integrated cell conditioning for reviving deeply discharged cells and minimizing heat dissipation during initial stage of charge. With a capacity of up to 34 whr the battery lets your laptop work seamlessly when you are on the move. The benchmarq bq2057 series advanced lithium ion li ion and lithium polymer li pol linear charge management ics are designed for cost sensitive and compact portable electronics.

I m planning to use four 18650 cells in series and i want to build a circuit for charging them.