X-Git-Url: http://www2.svjatoslav.eu/gitweb/?p=physical.git;a=blobdiff_plain;f=power%2Fbattery%20tester%2Findex.html;h=3f14985b937f7fc3e295456cf596ffb218611a84;hp=7d757b8d853005994b332d707b47c6aff41ac135;hb=b580449140ba031f48b4c27e24e67f46fec848c9;hpb=5267c46b2fcbfcf061939a3266c08dcd66dc14d3 diff --git a/power/battery tester/index.html b/power/battery tester/index.html index 7d757b8..3f14985 100644 --- a/power/battery tester/index.html +++ b/power/battery tester/index.html @@ -2,7 +2,7 @@ AA and AAA battery tester - + @@ -256,8 +256,8 @@ intended to discover old batteries with reduced capacity.

-Freshly charged batteries are tested under high load by shorting -battery + and - terminals using 5 ohm power resistor +Freshly charged batteries are tested under high load for short time by +shorting battery + and - terminals using 5 ohm power resistor (R1). Simultaneously battery voltage is being measured while under load.

@@ -270,9 +270,17 @@ load.

I use vintage analog voltmeter. Instead of power resistor I use -Nichrome resistance wire. It gets hot quickly! +Nichrome resistance wire. Test/measurement button should not be +pressed for long because power resistor gets hot quickly and battery +is being quickly depleted during measurement.

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assembly.png +

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  • PS: While this device is interesting to build, still you can just +use ordinary ammeter that can handle battery generated current. +
    • @@ -303,7 +315,7 @@ Nichrome resistance wire. It gets hot quickly!