Vlad's Gadgets

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Happy Australia Day

Vlad's Gadgets wishes all fellow Aussies a Happy Australia Day!

We hope you've spent the day drinking beer with friends and family around a barbeque, or any number of other fun…

Happy Australia Day
Heller 5 Fin 1000W Column Electric Oil Heater

The Heller 5-fin 1000W Electric Oil Heater is an oil-filled radiative heater. It consist of parallel metal columns (fins) with hollow cavities and a sealed reservoir of oil. A heating…

Heller 5-Fin 1000W Electric Oil Heater
Brief Blogs for Week Ending 2012-07-26

From Lifehacker: how to make your smartphone the most important tool in your toolbox - http://t.co/LEcqyReW ->

Brief Blogs for Week Ending 2012-08-09

Comprehensive article on Lifehacker has lots of advice on how to protect your gadgets from theft: http://t.co/HGJ6UeRI ->

Excellent tip: To find great deals on Gumtree/eBay/Craigslist, include the search keyword "moving"…

Gadget Diary – Healing Sunburns with my UFO Grow Light After a Hot Summer Day at Taronga Zoo

Last Saturday, I attended my former workplace's Christmas party. We spent the day at Taronga Zoo, and then were taken by water taxi to Darling Harbour, where we had dinner…

Gadget Diary – Healing Sunburns with my UFO Grow Light After a Hot Summer Day at Taronga Zoo
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12 Channel Smart AA, AAA and 9V Battery Charger with Discharge Function

Written by Vlad on March 19, 2011 – 10:12 pm - 3,824 views

Smart battery charger with discharge function, loaded with 8 AA NiMH batteries

This is a microprocessor-controlled battery charger that can charge up to 10 x AA/AAA batteries and 2 x 9V batteries. It supports both NiCad (Nickel-Cadmium) and NiMH (Nickel-Metal Hydride) simultaneously. Each battery is independently monitored and charged, and a multi-colour LED above each battery indicates the charging status.

There is a discharge function that drains all the batteries completely before commencing a charging cycle, which is useful for rectifying “memory effects” and other common battery problems. It employs several mechanisms to ensure that batteries are completely charged, but not overcharged.

It comes with both a 12V DC power adapter that operates worldwide on mains voltages between 100-240V as well as a lead that plugs into a car cigarette lighter socket so you can charge batteries when you’re on the road.

I purchased this from Jaycar electronics, who call it 12VDC & 240VAC Smart Battery Charger Ni-Cd & Ni-MH. I have seen similar smart chargers on eBay, but most are 10-channel chargers with support for only AA and AAA batteries.

Why I bought the Smart AA & AAA battery charger

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