HGUX — 12 V High-Power UPS Battery for 15-Minute Ride-Through

19 high-power AGM monoblocs, 28 W to 1250 W per cell — built for short-duration, high-rate UPS discharge

When the grid drops and your UPS has 5 to 15 minutes to keep the load alive, you do not want a 20-hour capacity monobloc — you want a battery engineered for high-rate discharge. The HGUX series is that battery. Nineteen 12 V AGM models rated from 28 W/cell to 1250 W/cell, with the low internal resistance and the thick plate structure that a true UPS duty cycle demands. It is the right cell for online double-conversion UPS plants, EPS systems, IDC battery cabinets and any site where the discharge event lasts minutes, not hours.

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What is the HGUX?

HGUX is the high-power branch of the HGU platform. Inside each cell, the active material is formulated for high-current discharge rather than for long float endurance. The plates are thicker, the grid is heavier, and the AGM separator has lower resistance than the equivalent-capacity HGU-12V monobloc. The result is a 12 V monobloc that delivers three to four times the watts-per-cell of a general-purpose AGM monobloc during the first five minutes of discharge — without paying for the long-hour capacity you do not need.

• 19 power ratings from 28 W to 1250 W per cell (15-minute rate, 1.67 V/cell end voltage, 25 °C)

• Low internal resistance for high-rate discharge

• 5-minute and 15-minute power ratings published for every model

• Float design life up to 12 years at 25 °C

• Common terminal families (F12/F16/F20) for simple cable termination

• CE / UL / IEC 60896 compliance

Where HGUX fits

HGUX is engineered for short-duration, high-current DC backup:

• Online double-conversion UPS (5 kVA to 800 kVA)

• EPS cabinets for emergency lighting and life-safety loads

• IDC battery strings, edge data centres and modular UPS rooms

• Power plants, substations and railway signalling DC supplies

• Process-control DCS, SCADA RTUs and instrumentation back-up

• Telecom central-office DC plants with a high-rate discharge profile

Why choose the HGUX series

1. Built for high-rate discharge, not long-hour float

• Heavy-duty plate grid optimised for 5-minute to 15-minute discharge

• AGM separator with low electrical resistance

• Published 5-minute and 15-minute power tables for every model

• Lower voltage drop during the first minute of discharge than general-purpose AGM

2. Predictable ride-through under real load

• Better-than-typical voltage hold at 0.5 C and 1 C discharge

• Stable voltage plateau reduces the UPS inverter's reactive current draw

• Helps the UPS pass ride-through certification tests without oversizing the string

3. Drop-in for retrofit cabinets

• Standard 12 V monobloc footprint matches existing UPS battery cabinets

• Front-access terminal option on the higher-capacity models (F12 / F16 / F20)

• Compatible with common UPS battery-monitoring probes and shunts

Common platform across the HGUX family

• AGM VRLA chemistry, sealed, maintenance-free

• Float voltage 13.5 V at 25 °C, temperature-compensated -18 mV/°C/cell

• Equalise / cycle charge 13.8–14.4 V

• Operating temperature -15 °C to +45 °C (recommended 20–25 °C)

• Self-discharge below 3 % per month at 25 °C

• Container and cover ABS, flame-retardant to UL94 V-0 on request

• Heavy-duty plate grid for high-rate discharge

All 19 HGUX models at a glance

High-power 12 V monoblocs; dimensions in millimetres; case colour black

Operating conditions

• Float voltage: 13.5 V at 25 °C (temperature-compensated -18 mV/°C/cell)

• Equalise charge: 13.8–14.4 V for 24 h maximum

• Operating temperature: -15 °C to +45 °C (recommended 20–25 °C)

• Self-discharge: below 3 % per month at 25 °C

• Storage re-charge interval: 6 months at 25 °C

• Torque on terminal bolts: 6–8 N·m (F12/F16), 10–12 N·m (F20)

How HGUX compares to a general-purpose 12 V monobloc

• HGUX publishes a 15-minute power rating (watts per cell) — general AGM monoblocs publish a 20-hour capacity

• HGUX has lower internal resistance, so voltage drop at 0.5 C to 1 C is significantly smaller

• HGUX is built for the partial-state-of-charge duty profile typical of UPS ride-through events

• HGUX can replace HGU-12V in any UPS cabinet, but it is not designed to be cheaper for low-rate long-hour backup

Other HGU battery families

• HGU Series (2 V cells)

• HGU-12V (12 V monobloc)

• HGUX (High-power UPS)

• HGUF (Front-terminal)

• HGUG (Tubular GEL)

• HGUC (Lead-carbon)

• HGUHVC (Lithium cabinet)

Why HG upsboss

HG upsboss is the export brand of Shenzhen Shengpuwei Industrial Co., Ltd., a battery and UPS-systems manufacturer based in Shenzhen, China. We design, build and export VRLA, GEL, lead-carbon and LiFePO4 backup batteries for UPS, EPS, telecom, data-centre and renewable-storage operators in more than 60 countries. Every HGU-series battery ships with type-test reports, full BMS integration where applicable, and the CE / UL / IEC documentation you need for customs clearance and end-user acceptance.

Data security and compliance notice

All product specifications, images and documentation published on this page are the property of HG upsboss / Shenzhen Shengpuwei Industrial Co., Ltd. and are intended for legitimate procurement, engineering and integration use. Reproduction for counterfeit, misbranding or unauthorised resale is prohibited. Specification values are typical at 25 °C and may vary within published tolerances. Battery installations must comply with local electrical, ventilation and transport regulations.

Frequently asked questions

1. Why does HGUX publish power (watts) rather than capacity (ampere-hours)?

UPS ride-through is a power problem, not an energy problem. The 15-minute watt rating tells the UPS designer exactly how many watts the cell will deliver for the 15-minute window of the standard ride-through test, which is far more useful than an ampere-hour rating measured at a 20-hour rate.

2. Can I replace my existing UPS battery with HGUX without changing the UPS?

Yes — HGUX is a 12 V monobloc in a standard footprint. The UPS float-voltage setting (13.5 V) and equalise ceiling (13.8–14.4 V) are the same as for any AGM VRLA monobloc, so no UPS parameter change is needed. You will, however, see longer runtime and tighter voltage hold at the existing load.

3. Is HGUX suitable for float-standby at 25 °C all year?

Yes — HGUX has a float design life of up to 12 years at 25 °C, similar to general AGM monoblocs. The high-rate plate structure does not penalise float life; it simply delivers more power during the discharge event.

4. What end voltage should I design for?

For a 15-minute ride-through at the published watt rating, the end voltage per cell is 1.67 V, giving 10.0 V at the 12 V monobloc level. For shorter (5-minute) ride-through, the end voltage is typically 1.60 V per cell (9.6 V at the monobloc). Always confirm against your UPS inverter's low-voltage disconnect setting.

5. Can I parallel multiple HGUX strings?

Yes — HGUX cells are matched in voltage and internal resistance at the factory and can be paralleled in strings of any length. Common configurations are 32-cell (384 V) and 40-cell (480 V) strings for medium-to-large UPS plants.

6. What about the HGUX12-800W 2 V model?

The 2 V cell HGUX12-800W is the high-power single cell for very large UPS plants where the system DC bus is built from 2 V cells rather than 12 V monoblocs. It delivers 800 W per cell at the 15-minute rate and is intended for retrofit of legacy 2 V-cell battery rooms.

7. Does HGUX need special ventilation?

HGUX is a sealed VRLA monobloc with a one-way pressure-relief valve. Hydrogen evolution during float charge is minimal (within the IEC 60896-21 envelope) and standard UPS-cabinet ventilation is sufficient. For indoor battery rooms exceeding 100 kW of charging, follow local ventilation codes.

8. Is HGUX more expensive than HGU-12V?

Yes — the heavy-duty plate structure adds cost. The economics work in your favour when the discharge event is minutes long, because a smaller HGUX string delivers the same ride-through as a much larger HGU-12V string. For long-hour float duty, HGU-12V is the more cost-effective choice.

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