How to Test Capacity of a Lead Acid Battery with a Source Measure Unit
Batteries are characterized by their ability to deliver the required current over some period of time, called Amp-hours. Also known as capacity, different types of batteries have different characterizations curves that show their amp-hours as a function of time.
Lead Acid Battery Testing Methods
Verifying the manufacturer's capacity after the battery has been used for some time is known as a battery charge-discharge test.
How To Test Battery Capacity With Multimeter
Source measure units, devices that function both as a power supply and a multimeter/electronic load, are ideal for these types of tests. In this video, applications engineer Barry Bolling uses a GS610 source measure unit to perform a charge-discharge test on a lead acid battery to show how to test lead acid battery capacity.
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GS610 Source Measure Unit
The GS610 is made up of a programmable current and voltage source, a voltmeter, and an ammeter. Each function can be combined into numerous operation modes.
Source Measure Units
A Source Measurement Unit (SMU) is a flexible test instrument which is capable of both sourcing and measuring voltage and/or current at the same time.