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V2.5 LiFePO4 Batteries Sold Out

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All V2.5 cells have been sold out and won't be manufactured. All the batteries we're selling now are V5.

V2.5 LiFePO4 Battery Pack Clearance (with V5 BMS)

We still have some V2.5 LiFePO4 battery cells in stock and will clear all of them now. Price of V2.5 LiFePO4 packs was same as the newest V5 packs. So, what's the offer for the clearance?Same price but free shipping for these V2.5 battery packs. Yes, free shipping. The shipping is same as the regular [...]

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Holiday Notice

    Chinese New Year is coming. We will be on Holiday from Feb 12th to Feb 26th. Shipping company will stop taking packages from Feb 9th. So, orders placed from now won't be shipped out before the long holiday. We will have to process them after that.    Sorry for the inconvenience it might cause.     Happy [...]

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What's new on V5 LiFePO4 BMS (Battery Management System)?

New design for good heat sinking. The big black aluminum heat sink plate is mounted on all the big IRFB4110 MOSFETs and bleeding resistors. It will be very cool when the battery is being discharged. At the end of charge, the heat sink plate will send out most heat from the bleeding resistors. Furthermore, the [...]

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We have moved to the new server

The elder service provider of our web store will stop their services early next year. We have to move all the contents of our web store to the new platform.It's a good chance for us to redesign the web pages. The web site looks more elegant, but has more contents. It also has this blog [...]

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