From: Svjatoslav Agejenko Date: Sun, 24 May 2020 20:56:43 +0000 (+0300) Subject: updated battery tester documentation X-Git-Url: http://www2.svjatoslav.eu/gitweb/?a=commitdiff_plain;h=b580449140ba031f48b4c27e24e67f46fec848c9;p=physical.git updated battery tester documentation --- diff --git a/index.html b/index.html index faf8dc4..a63446b 100644 --- a/index.html +++ b/index.html @@ -2,7 +2,7 @@ Physical projects - + @@ -298,6 +298,12 @@ git clone https://www2.svjatoslav.eu/git/physical.git power/12V%20Lead-Acid%20battery%20changer%20and%20terminal/make.png "> + +
  • battery tester +
    +
    • @@ -433,7 +439,7 @@ git clone https://www2.svjatoslav.eu/git/physical.git diff --git a/index.org b/index.org index a975659..a113009 100644 --- a/index.org +++ b/index.org @@ -66,6 +66,12 @@ Collection of physical projects. Electronics, 3D designs etc.. power/12V%20Lead-Acid%20battery%20changer%20and%20terminal/make.png )}}} ++ battery tester + {{{imglnk( + power/battery%20tester/index.html, + power/battery%20tester/make.png + )}}} + ** USB + USB cable terminals diff --git a/power/battery tester/assembly.png b/power/battery tester/assembly.png new file mode 100644 index 0000000..34954b0 Binary files /dev/null and b/power/battery tester/assembly.png differ 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.

    + +
    +

    assembly.png +

    +
    + + +
  • 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! diff --git a/power/battery tester/index.org b/power/battery tester/index.org index 21dd258..6e61e4f 100644 --- a/power/battery tester/index.org +++ b/power/battery tester/index.org @@ -39,15 +39,19 @@ at their terminals is good. But some old batteries will get empty/discharged way too quickly under normal load. This device is 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. [[file:electrical%20schematic.png]] 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. + +[[file:assembly.png]] + Body: [[file:body.png]] + Cover: [[file:cover.png]] @@ -56,3 +60,6 @@ Nichrome resistance wire. It gets hot quickly! + [[file:bodyAndCover.FCStd][FreeCAD project]] + [[file:body.stl][body STL file]] + [[file:cover.stl][cover STL file]] + ++ PS: While this device is interesting to build, still you can just + use ordinary ammeter that can handle battery generated current. diff --git a/power/battery tester/make, 2.png b/power/battery tester/make, 2.png new file mode 100644 index 0000000..1f8502b Binary files /dev/null and b/power/battery tester/make, 2.png differ diff --git a/power/battery tester/make.png b/power/battery tester/make.png new file mode 100644 index 0000000..ffc5be1 Binary files /dev/null and b/power/battery tester/make.png differ