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Posts Tagged ‘batteries’

Teardown: A couple of laptop batteries (aftermarket vs original)

Thursday, April 28th, 2016

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.

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Posted in Teardowns | No Comments »

ESP8266 MQTT battery monitor project

Monday, August 3rd, 2015

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....

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Posted in DirtyPCBs.com, wireless | No Comments »

Lithium Polymer internal resistance meter determines battery life

Tuesday, December 18th, 2012

[embed]http://www.youtube.com/watch?v=Lo2obGQtks8[/embed] 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...

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Posted in Lithium Ion, project logs | 4 Comments »

Guide to powering your projects off the grid

Tuesday, March 15th, 2011

Seeed Studio has posted a guide to powering your projects off the grid. Battery, wind, hydro, solar, they've got it covered.

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Posted in advertising, documentation, site | No Comments »

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