Shumacher battery charger
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General
LVL1 has three Ender 3 printers available for general use.
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Firmware
Matt has compiled a firmware for our Ender 3s:
Do not take this apart
Input: 120VAC 3.9AMPS Ouput: 2ADC 10ADC 15ADC at 12VDC
Step 1 - Connect clips to battery and into a live AC power outlet. CONNECTED light will glow if properly connected.
Step 2 - Select BATTERY TYPE
Standard - Lead acid - car battery AGM - Absorbed glass mat - security and ups batteries Gel Cell
Step 3 - Select BATTERY SIZE to begin charging cycle