groundlover
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groundlover reacted to Costa in My 200Ah AGM’s are kaput….got nothing to loose, I will try to desulphate them!In summary: with Battery Capacity Test Tool V2.0, have been turning the 600W light ON-OFF manually by hand. Start the test, the datalogger records the battery voltage vs time. Listen out for the buzzer, then go and witness the last few minutes of discharge till the cut-off voltage and finally switch off the lights (manually).
Spoiler alert 1: I have used this setup to revive and evaluate my old Deltec 200Ah batterieis and another set of Allgrand 200Ah that are installed at my father-in-law (more about those results in a future post).
Spoiler alert 2: I am busy playing with an ESP8266 (similar to Arduino) + OLED screen + INA219 current & voltage sensing board + microSD card, to build a comprehensive datalogger setup (V3.0). Im already sitting at over 900 lines of Arduino code. The baby shunt on the INA219 will eventualy be replaced with my 100A shunt. This is intended to also switch the 50A load via a software controlled cut-off voltage.