LCD Battery Capacity/Voltage Tester GY-6

The GY-6 LCD Battery Capacity/Voltage Tester is a versatile monitoring module designed to display real-time battery voltage and charge levels. Compatible with various battery chemistries, including lithium-ion, lead-acid, and lithium iron phosphate (LiFePO₄), this device is ideal for applications such as electric bikes, scooters, solar systems, and DIY battery packs.

Featuring a clear LCD screen, the tester displays both voltage and remaining battery capacity as a bar graph and percentage. It supports a wide input voltage range and automatically adapts to 12V, 24V, 36V, or 48V systems. Its compact design and easy panel mounting make it a convenient addition to any energy management system or mobile power setup.

Features:

• Clear LCD screen displays voltage and charge percentage.
• Compatible with multiple battery types (Li-ion, LiFePO₄, lead-acid).
• Supports common system voltages: 12V, 24V, 36V, 48V.
• Automatic detection of battery type and voltage range.
• Visual battery bar and numeric percentage indicator.
• Simple 2-wire connection for quick integration.
• Compact and lightweight design for easy installation.
• Protective screen cover to reduce glare and damage.

Specifications:

• Model: GY-6S
• Color: Black
• Backlight color: Green
• Screen size: 43 x 11.3mm
• Voltage range: 6-70V
• Circuit load current: 5 – 6mA
• Suitable for: 3-15pcs 3.7V Lithium Batteries; Lead Acid Batteries 12V, 24V, 36V, 48V; Fe Batteries
• Dimensions: 61.3 x 33.3 x 13.5mm
• Mounting hole Size: 58 x 28.1mm
• Wire Length: 30cm

Battery specifications:

Single string battery nominal voltage:

Setup steps:

• Press and hold the setting button to power the battery, enter the setting interface
• Short press the setting button to select the battery specification (P=lead acid L=lithium battery F=lithium iron phosphate battery)
• Short press the function key to select the number of battery strings (the setting key is increased, the function key is reduced)
• Long press the function key to set the S mode, the setting key selects the corresponding mode, and the function key is turned on or off.
• After setting it, you can re-power it.

Code: Suitable for

L3: 3 string lithium
L4: 4 string lithium
L5: 5 string lithium
L6: 6 string lithium
L7: 7 string lithium
L8: 8 string lithium
L9: 9 string lithium
L10: 10 string lithium
L11: 11 string lithium
L12: 12 string lithium
L13: 13 string lithium
L14: 14 string lithium
P12V: 12V lead-acid
P24V: 24V lead-acid
P36V: 36V lead-acid
P48V: 48V lead-acid

Applications:

• Battery monitoring in e-bikes and scooters.
• DIY power bank or battery pack monitoring.
• Solar power system battery tracking.
• Off-grid energy storage solutions.
• General-purpose DC battery-powered projects.