Product category:
Batteries and Chargers
News Release from: Lawtronics | Subject: Custom battery chargers
Edited by the Electronicstalk Editorial
Team on 09 January 2004
Custom charger answers military demands
A three-channel charger for fast charging three 24V NiMH batteries has been custom designed by Lawtronics.
A three-channel charger for fast charging three 24V NiMH batteries has been custom designed by Lawtronics The Kent-based charger specialist was asked by Instro Precision to develop a charger unit powered from a motor vehicle that could simultaneously charge three military specification NiMH batteries
This article was originally published on Electronicstalk on 7 Oct 2004 at 8.00am (UK)
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The batteries will be used to power Instro Precision's new range of portable angulation heads, which support electro-optical sensors for use in defence and commercial applications.
"There were no off-the-shelf chargers available for the military specification batteries we are using", explained James Winter, Senior Electronics Engineer at Instro Precision, which is a world leader in sensor support systems.
"We therefore needed a high performance charger designed to our own specifications, and within tight time constraints".
The fan-cooled charger is a modified three-channel version of Lawtronics' ICaMS range.
"We had to optimise its performance to limit the temperature rise in the batteries, which are housed in an environmentally sealed container", said David Winnett, Lawtronics' Technical Manager.
"We designed them to be charged at as fast a rate as possible, without the batteries' own thermistors shutting them down".
The charger unit uses a 32-36V DC supply and incorporates short forming charge, bulk fast charge period, trickle charge and auto reset functions.
A soft-start charge routine minimises rejection of substandard cells prior to bulk charge.
Trickle charging enables continued battery forming for new cells.
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