What is the battery capacity of the UGREEN US300?

The UGREEN US300 has a rated energy of 43.2Wh and a capacity of 12000mAh (4x3000mAh).

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UGREEN NASync DXP2800, 2-Bay NAS with Intel N100 Quad-Core CPU (Up to 3.4GHz) 8GB DDR5, 2x M.2 PCIe Slots, 2.5GbE Port (Diskless)

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Main image of UGREEN US3000 120W Max. 12000mAh (4x3000mAh), 43.2Wh (14.4V 3000mAh) Battery Rated Energy, Lithium-ion Battery, Compatible with DH2300, DH4300 plus, DXP2800, DXP4800, DXP4800 Plus & DXP480T Plus

Alt view image 2 of 8 - UGREEN US3000 120W Max. 12000mAh (4x3000mAh), 43.2Wh (14.4V 3000mAh) Battery Rated Energy, Lithium-ion Battery, Compatible with DH2300, DH4300 plus, DXP2800, DXP4800, DXP4800 Plus & DXP480T Plus

Alt view image 3 of 8 - UGREEN US3000 120W Max. 12000mAh (4x3000mAh), 43.2Wh (14.4V 3000mAh) Battery Rated Energy, Lithium-ion Battery, Compatible with DH2300, DH4300 plus, DXP2800, DXP4800, DXP4800 Plus & DXP480T Plus

Alt view image 4 of 8 - UGREEN US3000 120W Max. 12000mAh (4x3000mAh), 43.2Wh (14.4V 3000mAh) Battery Rated Energy, Lithium-ion Battery, Compatible with DH2300, DH4300 plus, DXP2800, DXP4800, DXP4800 Plus & DXP480T Plus

Alt view image 5 of 8 - UGREEN US3000 120W Max. 12000mAh (4x3000mAh), 43.2Wh (14.4V 3000mAh) Battery Rated Energy, Lithium-ion Battery, Compatible with DH2300, DH4300 plus, DXP2800, DXP4800, DXP4800 Plus & DXP480T Plus

Alt view image 6 of 8 - UGREEN US3000 120W Max. 12000mAh (4x3000mAh), 43.2Wh (14.4V 3000mAh) Battery Rated Energy, Lithium-ion Battery, Compatible with DH2300, DH4300 plus, DXP2800, DXP4800, DXP4800 Plus & DXP480T Plus

Alt view image 7 of 8 - UGREEN US3000 120W Max. 12000mAh (4x3000mAh), 43.2Wh (14.4V 3000mAh) Battery Rated Energy, Lithium-ion Battery, Compatible with DH2300, DH4300 plus, DXP2800, DXP4800, DXP4800 Plus & DXP480T Plus

Alt view image 8 of 8 - UGREEN US3000 120W Max. 12000mAh (4x3000mAh), 43.2Wh (14.4V 3000mAh) Battery Rated Energy, Lithium-ion Battery, Compatible with DH2300, DH4300 plus, DXP2800, DXP4800, DXP4800 Plus & DXP480T Plus

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UGREEN US3000 120W Max. 12000mAh (4x3000mAh), 43.2Wh (14.4V 3000mAh) Battery Rated Energy, Lithium-ion Battery, Compatible with DH2300, DH4300 plus, DXP2800, DXP4800, DXP4800 Plus & DXP480T Plus

Q: Which devices are compatible with the UGREEN US300 battery?

The UGREEN US300 is compatible with DH2300, DH4300 plus, DXP2800, DXP4800, DXP4800 Plus, and DXP480T Plus.

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Note: This model is not compatible with the DXP6800 and DXP8800 series.
Switches to battery power in 0 seconds, Guaranteed Value Data.
Smart Control, Remote Monitoring With the UGREEN App
120W output Compatible with UGREEN NAS.
Nine-level Safety Protection, Stable and Reliable.
12000mAh Battery Compact & Powerful.

This item is covered under the Manufacturer Only Return Policy.

Specs

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Learn more about the Ugreen Group Limited US300


Best Seller Ranking	#16 in Battery Backup (UPS)

Model
Brand	Ugreen
Model	US300

Input
Input Voltage Range	12V?10A/19V?7.9A/20V?7A

Output
Watts	120W Max
Output Voltage	12V?10A

Battery
Battery Type	12000mAh (4 x 3000mAh) Lithium-ion Battery

Details
Interface Port	USB

Additional Information
First Listed on Newegg	May 21, 2026

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Limited Warranty period (parts): 2 years
Limited Warranty period (labor): 2 years
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Manufacturer Contact Info

The UGREEN US3000 is a 120W battery backup with a 12,000mAh lithium-ion battery and 0-second switch to battery power, suited to users who want backup power for compatible UGREEN NAS devices, including the DH2300, DH4300 Plus, DXP2800, DXP4800, DXP4800 Plus, and DXP480T Plus.

Recommended For

UGREEN NAS owners who want brief power interruptions or outages to trigger a safe shutdown instead of an abrupt loss of power; the US3000 is designed for compatible NAS models and integrates with UGOS shutdown controls.
Owners of a supported UGREEN NAS—such as the DH2300, DH4300 Plus, DXP2800, DXP4800 Plus, DXP4800 Pro, or DXP480T Plus—who want a compact, dedicated DC backup for that NAS.
Home NAS users who mainly need time to ride out brief power dips or shut down gracefully, rather than keep storage running through a prolonged blackout; reported runtime is about 8–10 minutes, depending on load.
Users with a space-limited desktop NAS setup who prefer a small, single-device DC backup over a conventional AC UPS.

Spec Summary

Attribute	Value
Best For	Battery backup for compatible UGREEN NAS systems, with a 120W-max lithium-ion battery pack
Power Input And Output	Input: 12V?10A, 19V?7.9A, or 20V?7A; output: 12V?10A, up to 120W
Battery	12,000mAh lithium-ion battery, arranged as 4 × 3,000mAh cells
Connectivity	USB interface port
Model Identifiers	Ugreen US300

Item#: N82E16842995001