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Leoch XP12-540FR High Rate AGM Battery
Leoch XP12-540FR High Rate AGM Battery
Leoch XP12-540FR Battery - 12V 540 W per Cell High Rate AGM, 155Ah, M6
Warranty
The Top of the XP Range
- 466.9 amps for 5 minutes - to 1.67 volts per cell, with 289.1 amps at 15 minutes, 181.8 amps at 30 minutes and 105.6 amps for a full hour.
- 155 Ah at the 20-hour rate - to 1.80 volts per cell at 25°C, 7.75 amps for 20 hours, for the rare site that runs it as a long-duration reserve.
- 2,499 amps short-circuit current - at approximately 3.8 milliohms internal resistance, fully charged, for DC-side protection coordination.
- Virgin lead plates, copper alloy inserts - low resistance at the plates and the posts, so the voltage holds under load instead of sagging into the inverter's cutoff.
- 100 percent capacity tested - every XP block is discharge tested and matched on voltage and internal resistance before it leaves the plant.
Technical Specifications
| Leoch XP12-540FR Specifications | |
|---|---|
| Part Number | XP12-540FR (also written XP12-540, XP12 540, xp12-540fr and leoch xp12-540) |
| Series | Leoch XP, ultra high rate AGM for UPS, flame retardant (FR) case build |
| Battery Type | High rate AGM, valve regulated lead acid (VRLA), UPS standby service |
| Nominal Voltage | 12V (6 cells) |
| Nominal Rating, 15 Minutes | 540 W per cell to 1.67 VPC at 25°C (3,240 W per battery) |
| Capacity, 20-Hour Rate | 155 Ah to 1.80 VPC at 25°C |
| Discharge Current, 5 Minutes | 466.9 A to 1.67 VPC; 327.4 A to 1.80 VPC |
| Discharge Current, 15 Minutes | 289.1 A to 1.67 VPC; 218.0 A to 1.80 VPC |
| Discharge Current, 30 Minutes | 181.8 A to 1.67 VPC; 151.7 A to 1.80 VPC |
| Discharge Current, 1 Hour | 105.6 A to 1.67 VPC; 92.1 A to 1.80 VPC |
| Discharge Power, 5 Minutes | 852.0 W per cell to 1.67 VPC |
| Discharge Power, 1 Hour | 203.8 W per cell to 1.67 VPC |
| Short Circuit Current | 2,499 A |
| Internal Resistance | Approximately 3.8 milliohms, fully charged, at 25°C |
| Maximum Charge Current | 0.25C (38.75 A) at 25°C |
| Float Charge Voltage | 2.25 to 2.30 V per cell at 25°C (13.5 to 13.8 V per battery) |
| Equalization Charge Voltage | 2.30 to 2.40 V per cell at 25°C |
| Temperature Coefficient | -3 mV per cell per °C on float; -4 mV per cell per °C on equalize |
| Terminal Type | M6 threaded insert (Leoch T8) |
| Length | 335 mm (13.2 inches) |
| Width | 172 mm (6.77 inches) |
| Container Height | 275 mm (10.8 inches) |
| Total Height | 278 mm (10.9 inches) |
| Weight | 42.4 kg (93.5 lbs) |
| Operating Temperature | Discharge -15°C to 50°C (5°F to 122°F); charge -20°C to 40°C (-4°F to 104°F); storage -15°C to 40°C (5°F to 104°F) |
| Capacity vs Temperature | 106% at 40°C; 100% at 25°C; 86% at 0°C |
| Self Discharge | 3% per month or less at 25°C |
| Container Material | ABS, flame retardant to UL 94 V-0 (the FR build; UL 94 HB is Leoch's standard case) |
| Standards | IEC 60896-21 and -22, third party tested; UL recognized; CE; IATA approved for air freight; IATF 16949 plants |
| Design Life | 12 years at 25°C on float service (Leoch) |
| Warranty | 36 months in UPS service (Leoch, XP) |
Where This Battery Is Used
- Large three-phase UPS strings - the data center and hospital systems where 40 blocks in series carry a load measured in hundreds of kilowatts for the minutes before the generator takes over.
- Generator-backed plants sized to the minute - sites whose runtime target leaves no margin at 490 watts per cell, where the extra 50 watts per cell buys the safety factor.
- Telecommunications and emergency DC plants - Leoch's XP application list covers both: the reserve behind switching equipment and control power in occupied buildings, where the V-0 case rating is specified.
Ordering and Freight
Frequently Asked Questions
What warranty applies, and is the 12-year figure part of it?
Leoch warrants the XP line for 36 months in UPS service. The 12 years is design life, Leoch's estimate of float service at 25°C from the XP12-540 datasheet, and it carries no replacement commitment. Both figures appear on this page, always labeled, because a listing that runs them together is how a buyer ends up believing in a 12-year warranty. The term is confirmed in writing with your quote.
Why is the short-circuit current lower than the XP12-490FR's?
Because the two figures come from different published tests, not because the 540 is the weaker battery. Leoch's XP12-540 sheet gives 2,499 amps and the XP12-490 sheet gives 3,264 amps, both at about 3.8 milliohms. Every other row of the tables runs the other way: the 540 delivers 466.9 amps for 5 minutes against 426.0, and 540 watts per cell at 15 minutes against 490. Use the sheet's short-circuit figure for the block you install when you coordinate the DC-side protection, and size the runtime on the constant power table.
Can I put XP12-540FR blocks into an XP12-490FR string?
Not in the same string. The cases and terminals are identical, so the blocks fit, but the two ratings have different plates and will not share load or age evenly, so the weaker rating sets the string's runtime and the stronger one works harder than it should. Replace a whole string with the 540 if you want the upgrade, and keep the good 490 survivors as spares for their own strings. If one 490 block has failed early inside the warranty period, the claim path is the right route rather than a substitution.
What does the 540 in XP12-540FR stand for?
Watts per cell over a 15-minute discharge to 1.67 volts per cell at 25°C. Leoch names every XP part by this rating rather than by amp hours because the range exists for UPS duty, and a UPS is sized on power over minutes. Six cells make about 3,240 watts from one block for 15 minutes; a 40-block string of XP12-540FR supports about 130 kilowatts at the DC bus for that quarter hour. The 155 Ah figure, at the 20-hour rate, is on the sheet as well, and it is the number to use only if the block is asked to run a long, light load.
Send the UPS model, the DC bus load and runtime target, the quantity and your delivery ZIP. A specialist confirms the string count against the constant power table, checks the M6 hardware, and quotes the set with lead time and freight in writing.
Call 1-877-775-4381 · battery specialists, not a call centerWARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov (State of California only).
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