Would this work for a lead acid battery?

This controller would not work well for lead acid batteries. (wrong voltage/current curves). Something like the Ardest module (also available on Amazon) is designed for both applications. Depending on the size of the battery, the current ratings on the solar panels used might be considerably higher than the small lithium batteries used in solar devices,

Doesn’t charge? the battery, 3.7v 1000mah, isn’t being recharged, comes on and off via solar cell, 5v 30ma. once drained, does not rechange. no switch

For a 1000mah/3.7 volt battery, solar panel will have to be putting out at least 7-10 volts at at least 300ma

So this apparently has reverse current protection but does it include overcurrent protection?

no, that is why you have to use a protected battery.

Given a constant voltage input- say 5v solar cell in - is the output voltage and current constant or does it vary with battery state of charge?

Output is constant regardless of battery charge as long as the sun is a consistent brightness.

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Acxico 3Pcs Solar Charge Controller Board Lithium Battery Charging Controller Auto ON/OFF Light Control Switch For DIY Street Lights Garden Lights

Acxico 3Pcs Solar Charge Controller Board Lithium Battery Charging Controller Auto ON/OFF Light Control Switch For DIY Street Lights Garden Lights

Product ID: 571228380

Details

Operation Mode
ON-OFF
Current Rating
0.5 Amps
Operating Voltage
5 Volts
Contact Type
Normally Open
Connector Type
Screw

⚡Auto ON/OFF light control switch

🔋Supports 1-4S lithium & LiFePO4 batteries

☀️4.5-28V solar input range

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RM198

Duties & taxes included

In stock

Sold byAmazon MalaysiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

☀️🔋 Light up your nights, powered by the sun and smart tech!

DIY READY MULTIPACK - Includes 3 controllers, perfect for scaling your garden, street, or landscape lighting projects.
SEAMLESS SOLAR SYNC - Automatically charges by day and powers lights by night, eliminating manual hassle.
SMART VOLTAGE DETECTION - Voltage-based control removes need for photosensitive sensors, boosting reliability.
COMPACT DURABLE DESIGN - IP54 rated for water resistance and built for long-lasting outdoor use.
VERSATILE BATTERY COMPATIBILITY - Supports multiple lithium battery configurations (1-4S) for tailored power solutions.

The Acxico 3Pcs Solar Charge Controller Board is a compact, IP54-rated device designed for efficient lithium and LiFePO4 battery charging with solar input from 4.5V to 28V. It features automatic ON/OFF light control based on voltage detection, eliminating the need for photosensitive elements. Ideal for DIY street, garden, and landscape lighting, it supports 1-4S battery configurations and includes three units for versatile multi-light setups.

Specifications

Operation Mode	ON-OFF
Current Rating	0.5 Amps
Operating Voltage	5 Volts
Contact Type	Normally Open
Connector Type	Screw
Brand	Acxico
Terminal	Physical
Circuit Type	4-way
Actuator Type	Automatic
Contact Material	Gold Or Silver
International Protection Rating	IP54
Number of Positions	2
Controller Type	Ring
Control Method	App
Connectivity Protocol	X-10
Colour	3PCS
Wattage	12 Watts
Net Quantity	3 Count
Number of Items	3
Manufacturer	ac
Model number	LB183
Item Weight	5 g
Package Dimensions	12.7 x 8.13 x 0.41 cm; 5 g
Item model number	LB183
Are batteries included?	No

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