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Solar aluminum substrate light panel

Overview

The single voltage of 5730 lamp beads requires 3-3.3 volts. After 5 series connection, the voltage needs to be between 15-16.5, while the maximum voltage of 4 strings of lithium batteries is 16.8, which is very suitable for direct connection of 4 strings of lithium batteries for power supply. Moreover, as the voltage drops, the power output of the battery also drops based on the characteristics of the lamp beads. The battery voltage is always kept above 14 volts (perfect battery over-discharge protection).

This is a comparison photo at night. On the far left is my uncle two or three. From Baibuy, the second one from the right is the light panel of this project. You can add solar panels and delay circuits to easily DIY solar lights

Design Files

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Update:2025-07-01 01:06:10

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