Decode Huawei UPS Model Numbers and Understand Battery Backup

When choosing an uninterruptible power supply (UPS), many customers feel confused by complex model names and battery backuptime. However, for Huawei UPS systems, these model numbers are not random—they follow a clear logic that describes the product’s key specifications.

Why Understanding UPS Model Numbers Matters
A UPS model number is more than just a product code—it actually tells you:
- Power capacity

- Installation type

- Battery configuration

- Backup time capability

Example: UPS2000-A-3KTTL

UPS = uninterruptible power system

2000 = capacity) ≤ 20 kVA

A = tower-mounted type

3K = Output capacity Unit 3 kVA

TT = tower-mounted type

L = Long backup time (external batteries)

Key Components

No.	Meaning	Description
1	Product category	UPS: uninterruptible power system
2	Product family	2000: P (capacity) ≤ 20 kVA
3	Product subcategory	A: tower-mounted UPS
3	Product subcategory	G: rack-mounted UPS
4	Output capacity	1K: 1 kVA
	Unit: VA	2K: 2 kVA
	Unit: VA	3K: 3 kVA
5	UPS type	RT: rack-mounted or tower-mounted UPS
5	UPS type	TT: tower-mounted UPS
6	Standard or long backup time model	S: standard backup time model, using built-in standard batteries to provide standard backup time
6	Standard or long backup time model	L: long backup time model, using external large-capacity batteries to provide long backup time

UPS models

Model	Represented By	Remarks
UPS2000-A-1KTTS	1K-standard backup time model-tower mounted-IEC	The tower-mounted model provides three configurations: 1 kVA, 2 kVA, and 3 kVA. Each configuration has standard backup time or long backup time.
UPS2000-A-1KTTL	1K-long backup time model-tower mounted-IEC
UPS2000-A-2KTTS	2K-standard backup time model-tower mounted-IEC
UPS2000-A-2KTTL	2K-long backup time model-tower mounted-IEC
UPS2000-A-3KTTS	3K-standard backup time model-tower mounted-IEC
UPS2000-A-3KTTL	3K-long backup time model-tower mounted-IEC

We can easily understand Huawei UPS model numbers follow a clear structure:

UPS + Series + Type + Capacity + Installation + Backup
Understanding this helps you select the right product quickly and accurately.

Battery Electrical Specifications

Item		1 kVA	2 kVA	3 kVA
Rated battery voltage	Standard backup time model	24 V DC	48 V DC	72 V DC
Rated battery voltage	Long backup time model	36 V DC	72 V DC	96 V DC
Number of batteries	Standard backup time model	2	4	6
Number of batteries	Long backup time model	3	6	8
Battery leakage current	Standard backup time model	17 µA	25.7 µA	27.4 µA
Battery leakage current	Long backup time model	25.4 µA	28.5 µA	32.8 µA
Battery type		12 V DC VRLA battery
Battery capacity	Standard backup time model	9 Ah
Battery capacity	Long backup time model	18 Ah
Battery EOD voltage	Standard backup time model	1.6–1.88 V/cell
Battery EOD voltage	Long backup time model	1.75 V/cell
Backup time	Standard backup time model	≥ 4 minutes (at rated full load), tested before delivery
Backup time	Long backup time model	Depending on the capacity of external batteries
Charger rated charge	Standard backup time model	1 A
Charger rated charge	Long backup time model	4 A
Float charging voltage	Standard backup time model	27.3 V DC±1%	54.7 V DC±1%	82.1 V DC±1%
Float charging voltage	Long backup time model	41.0 V DC±1%	82.1 V DC±1%	109.4 V DC±1%
Equalized charging voltage	Standard backup time model	28.3 V DC±1%	56.6 V DC±1%	84.9 V DC±1%
Equalized charging voltage	Long backup time model	42.5 V DC±1%	84.9 V DC±1%	113.3 V DC±1%

Kindly note for the backup time, standard backup time model: has built-in and fixed battery with limited back time ≥ 4 minutes (at rated full load), the precise duration as per tested result by factory before delivery; long backup time model: depending on the capacity of external batteries.

Power backup specifications of the battery box

Battery Box	Load	1 kVA Tower-mounted UPS with Long Backup Time (min)	2 kVA Tower-mounted UPS with Long Backup Time (min)	3 kVA Tower-mounted UPS with Long Backup Time (min)
One battery box	100%	15	17	17
	75%	21	25	25
	50%	39	45	45
	25%	77	85	85
Two battery boxes	100%	36	39	39
	75%	47	55	55
	50%	83	95	95
	25%	159	175	175

Ref.:

·Lower Load = Longer Runtime

The UPS runtime increases significantly when the load decreases.

·More Battery Cabinets = Longer Runtime

Doubling battery capacity nearly doubles runtime.

·1kVA, 2kVA, and 3kVA Show Similar Results

Runtime is mainly determined by battery capacity and load, not just UPS rating.

In real engineering projects:

·Do not design based on 100% load runtime only.

·Use 50%–75% load as a realistic planning reference.

·Always keep at least 30% battery margin for safety.

If you need more technical support about UPS or have any UPS project, please email us at sales@xponshop.com.

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