Karman wrote an article showing how to refurbish dead batteries to extend its life: One of the difficult parts when prototyping is to find reliable power sources. Today is still hard to find the battery size we want to use because country exporting frontiers stops these chemical packages. Here I’ll show how to refurbish dead batteries […]
Viktor writes: I’ve recently opened up a few laptop batteries and decided to take some pictures. Keep reading if you’ve ever wondered just how different the Chinese aftermarket batteries are compared to the originals. More details at Karosium homepage.
Steve’s latest DirtyPCBs project, a wireless MQTT battery monitor: This board uses an ESP8266 (ESP12), a Texas Instruments INA226 I2C voltage and current monitor, and a Texas Instruments LMR12010X buck converter. This board is designed to wirelessly monitor 12 volt batteries and power supplies using an external current shunt resistor. The voltage across the shunt […]
Here’s a project that let’s you measure the internal resistance of Lithium Polymer batteries. It measures the total current as the battery discharges through a 1 Ohm resistor. From the known voltage and the discharge current the internal resistance can calculated. This device can be used to measure the internal resistance of Lithium Polymer batteries […]
Seeed Studio has posted a guide to powering your projects off the grid. Battery, wind, hydro, solar, they’ve got it covered.