2 V stationary AGM batteries (VRLA) for solar, telecom and UPS banks — 50 to 3000 Ah
A stationary battery is one installed in a fixed place to supply DC power on standby or in daily cycling: telecom DC plants, UPS strings, switchgear and control batteries, and solar or hybrid energy storage. The Fullriver HGXL series is a stationary AGM range of single 2 V cells from 50 Ah to 3000 Ah, sealed, maintenance-free, with a lead-calcium-tin grid and a 20-year design life in float service at 25 °C. Build 12, 24, 48, 110 or 220 V banks from identical cells; we size the string and the charger together, with stock and support in Trang, delivery across Thailand and export worldwide.
- Single-cell design: one series string at any voltage, one cell to test or replace
- Rated at the 10-hour rate (C10), with C1, C3 and C5 published for every size
- Sealed VRLA, no free acid, any mounting orientation, nothing to top up
- 20-year design life in float service at 25 °C (Fullriver’s figure)
- Float 2.23–2.25 V and cycle 2.30–2.35 V per cell; −3 mV/°C/cell compensation
- Genuine Fullriver, supported from Trang; Thailand-wide and worldwide delivery
The range: every HGXL cell at a glance
Capacities are Fullriver’s published figures at the 10-, 5- and 1-hour rates. Dimensions are the case length × width × height with the total height over the terminals in brackets. Two sizes are priced on the site; the rest are quoted with lead time.
| Модель | C10 Ah | C5 Ah | C1 Ah | L × W × H mm (total H) | kg | Terminal | Price |
|---|---|---|---|---|---|---|---|
| HGXL50-2 | 50 | – | – | 161 × 49 × 166 (166) | 3.2 | М8 | Quote |
| HGXL100-2 | 100 | 85 | 60 | 172 × 72 × 206 (229) | 6.6 | F7 | Quote |
| HGXL150-2 | 150 | 127.5 | 90 | 176 × 102 × 206 (228) | 9.2 | М8 | Quote |
| HGXL200-2 | 200 | 170 | 110 | 172 × 110 × 330 (365) | 16 | М8 | USD 213.99 ex VAT |
| HGXL300-2 | 300 | 255 | 165 | 172 × 150 × 330 (365) | 22.6 | М8 | Quote |
| HGXL400-2 | 400 | 340 | 220 | 211 × 175 × 330 (367) | 32.5 | М8 | USD 416.99 ex VAT |
| HGXL500-2 | 500 | 425 | 300 | 241 × 172 × 330 (365) | 37.2 | М8 | Quote |
| HGXL600-2 | 600 | 510 | 330 | 301 × 175 × 330 (365) | 45 | М8 | Quote |
| HGXL800-2 | 800 | 680 | 480 | 411 × 175 × 330 (365) | 61.5 | М8 | Quote |
| HGXL1000-2 | 1000 | 850 | 600 | 474 × 175 × 328 (366) | 73.5 | М8 | Quote |
| HGXL1600-2 | 1600 | 1360 | 960 | 401 × 347 × 342 (378) | 110 | М8 | Quote |
| HGXL2000-2 | 2000 | 1700 | 1200 | 490 × 349 × 342 (382) | 146 | М8 | Quote |
| HGXL3000-2 | 3000 | 2550 | 1800 | 711 × 353 × 342 (382) | 220 | F10 | Quote |
All cells: 2 V nominal, Pb-Ca-Sn grid, flat pasted plates, AGM separator, ABS case (UL94-HB), max charge current 20 % of C10. Datasheet PDFs are linked from each product page.
Battery bank sizing calculator
Ah = daily Wh × days ÷ (system voltage × depth of discharge). The method is explained in the 48 V bank guide.
How many 2 V cells for each voltage
| Система | Cells in series | Float at 20–25 °C | Cycle charge at 20–25 °C |
|---|---|---|---|
| 12 В | 6 | 13.38–13.50 V | 13.80–14.10 V |
| 24 В | 12 | 26.76–27.00 V | 27.60–28.20 V |
| 48 В | 24 | 53.52–54.00 V | 55.20–56.40 V |
| 110 V | 55 | 122.65–123.75 V | 126.50–129.25 V |
| 220 V | 110 | 245.30–247.50 V | 253.00–258.50 V |
Bank amp-hours equal cell amp-hours, and nominal kWh is volts × Ah ÷ 1000. Full charging tables, temperature compensation and commissioning checks are in Charging 2 V AGM cells.
Where 2 V stationary cells are used
Off-grid and hybrid solar
Houses, resorts and island properties, farms and pumping stations. One string of large cells sized on the 10-hour rate carries the evening load and cycles gently; solar refills it by day and the generator becomes the reserve. Building a 48 V bank →
Telecom towers and exchanges
−48 V DC plants run 24 cells on float for years and deliver full current the moment the mains drops. Cell-level monitoring, cabinet fit and hybrid BTS sites are covered in the telecom and UPS guide →
UPS and data rooms
The cell count follows the UPS maker’s DC bus; autonomy is sized from the 1-, 3-, 5- and 10-hour ratings. Hospitals, hotels, control rooms and exchanges with a generator behind the battery. Sizing a UPS string →
Resorts, islands and marinas
Quiet nights, shorter generator runs and equipment a small team can look after, from Phuket and Krabi through the Trang and Satun islands to Samui. Battery banks in a tropical climate →
Utilities, rail and switchgear
110 V and 220 V DC systems of 55 or 110 cells for protection relays, SCADA, signalling and breaker tripping, with the high-rate figures that matter at the end of a long outage. Standby strings →
Choosing the chemistry
AGM against OPzV, OPzS, gel and lithium iron phosphate, in a table, with an honest account of when each is the right choice. Read the comparison →
Why big banks use 2 V cells rather than 12 V blocks
A bank of 2 V cells is one series string: every cell carries the same current, ages at the same rate and can be read, equalised or replaced on its own. Twelve-volt blocks are the right answer for boats, vehicles and small banks (our Fullriver deep-cycle range covers 55 to 260 Ah), but once a bank outgrows one string of blocks the only way to add capacity is parallel strings, which share current unevenly. With cells up to 3000 Ah, a 144 kWh bank at 48 V is still 24 cells in one string. The full argument, with a threshold table →
Supply in Thailand and South-East Asia
Drake Marine has supplied marine and DC electrical systems from Trang since 2002. HGXL cells are genuine Fullriver product, stocked and supported in Trang with the larger sizes supplied to order; we deliver Thailand-wide by road and ferry freight, including Phuket, Krabi, Koh Lanta, Samui and Bangkok, and export worldwide with freight quoted at cost and invoiced separately. Every bank is sized with its charging: KISAE chargers и inverter-chargers with a battery temperature sensor, so float voltage, compensation and acceptance current arrive matched to the string. Solar installers and electrical contractors: we size and supply, you build the site; ask about trade terms.
Руководства
2 V cells vs 12 V blocks
The one-string rule, the kWh threshold and a worked 48 V example.
Building a 48 V bank from 2 V cells
Cell count, sizing method, every size as a 48 V bank, wiring and charger sizing.
AGM vs OPzV vs OPzS vs gel vs lithium
A real comparison table and a decision flow.
Charging 2 V AGM cells
Float and cycle voltages by string, temperature compensation, equalisation, commissioning.
Telecom, UPS and switchgear strings
−48 V plants, UPS DC buses, autonomy at the 1- to 10-hour rates, rack fit.
Battery banks in a tropical climate
Heat, life and battery-room design in Thailand; resorts and islands.
Часто задаваемые вопросы
What is a stationary battery?
A stationary battery is one installed in a fixed location to supply DC power in standby or cycling duty: telecom DC plants, UPS strings, switchgear and control batteries, and solar or hybrid energy storage. Stationary cells are designed for long float life and are rated at the 10-hour discharge rate. Fullriver’s HGXL series is a stationary AGM (VRLA) range of 2 V cells from 50 to 3000 Ah.
What is a 2 V battery used for?
Building banks of any voltage from identical cells: six cells make 12 V, twelve make 24 V, twenty-four make 48 V, and 55 or 110 make the 110 V and 220 V DC systems used in switchgear and telecom. Because a single 2 V cell is made up to 3000 Ah, large banks stay as one series string instead of parallel strings of 12 V blocks.
How many 2 V cells do I need for 12 V, 24 V and 48 V?
Six, twelve and twenty-four cells in series. Bank capacity equals the capacity of the cell you choose.
How many kWh is a 2 V 1000 Ah battery?
Two kilowatt-hours nominal per cell at the 10-hour rate (2 V × 1000 Ah ÷ 1000). Twenty-four HGXL1000-2 cells make a 48 V, 1000 Ah bank of 48 kWh nominal.
How long do 2 V AGM batteries last?
Fullriver’s design life figure for the HGXL series is 20 years in float service at 25 °C. Service life depends on float voltage, temperature and how deeply the bank is cycled; charging with temperature compensation, a ventilated room and a generously sized bank are what let an installation approach the design figure.
Are 2 V AGM cells maintenance-free?
Yes. HGXL cells are sealed and valve-regulated with the electrolyte held in an absorbent glass mat. There is no free acid, no water to top up and no specific gravity to check, and the cells can be mounted in any orientation.
What charger settings do 2 V AGM cells need?
Float at 2.23–2.25 V per cell and cycle-charge at 2.30–2.35 V per cell at 20–25 °C, with −3 mV per °C per cell temperature compensation and charge current limited to 20 % of the C10 capacity. Multiply the per-cell figures by the cell count for the string setting; the charging guide has the tables.
Do you deliver to Phuket, Bangkok, Samui and outside Thailand?
Yes. We are based in Trang and deliver Thailand-wide by road and ferry freight, including Phuket, Krabi, Koh Lanta, Samui and Bangkok, and we export worldwide with freight quoted at cost and invoiced separately.
Tell us the voltage, the load and the site
We will size the string, rack, links and charging, and quote genuine Fullriver HGXL cells with the lead time.