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+12V Lead-Acid battery changer and terminal
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12V Lead-Acid battery changer and terminal
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1 General
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DISCLAIMER: I DO ELECTRONICS AND 3D DESIGN SOLELY AS A HOBBY. THERE
+COULD BE ERRORS THAT CAN RESULT IN ALL KINDS OF DAMAGE. USE THESE
+DESIGNS AT YOUR OWN RISK.
+
+Simple charger and terminal (front-end) for 12V lead-acid battery.
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+Idea is to distribute power from rechargeable 12V battery to various
+appliances (soldering iron, radio transmitters, etc..) while also
+providing use-charging in the background.
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+Single on/off button disconnects battery and up-step voltage source
+from front panel terminal connectors.
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+Tecnoiot MT3608 voltage up-step is used. 3V DC external power supply
+is used to feed voltage up-step. Up-step is tuned to ~14.4 V.
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+Current design is rather of blog (experience sharing) value. It has
+quite some drawbacks:
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Warning: Circuit has dangerous instability. Requires low voltage
+~3V but relatively high current external power supply. Using
+higher voltage but low current power supply could easily lead to
+situation where step-up generated load pushes power supply output
+voltage down too much. This leads to too much power being lost
+within power supply and easily leads to power supply overheating!
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There is no dedicated current limiter. 3V external power supply
+and up-step are acting as current limiters.
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While RCA connectors do work as DC power connectors, but are not
+intended to be used this way and are not very reliable.
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