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C&D Technologies UPS12-540MR Battery
C&D Technologies UPS12-540MR Battery
C&D Dynasty UPS12-540MR Battery - 12V 149 Ah High Rate Max AGM
Warranty
One Case, Three Ratings
- Top terminal, 1/4-20 UNC at 110 in-lbs - 12.4 N-m, against 5,000 amps short-circuit current at 0.1 second and a 0.0023 ohm reference impedance at 60 Hz.
- Patented Long Life Alloy grid - C&D's low-calcium alloy, which slows grid growth and reduces gassing on a long float.
- UL-recognized component - compliant with UL1778, UL 924, UL 1989 and UL 94 V-2, and with BS6290-4 and IEC-896-2.
- Case and cover thermally welded - flame retardant polypropylene to UL94-V2, bonded without a mechanical joint.
- Float charge voltage 13.65 ± 0.15 VDC - the average per 12V unit, with individual blocks holding between 13.3 and 14.5 volts once the string has floated 24 hours.
Technical Specifications
| C&D UPS12-540MR Specifications | |
|---|---|
| Part Number | UPS12-540MR (also searched as UPS12 540MR, UPS12540MR; sold under the C&D Dynasty brand) |
| Series | UPS High Rate Max (MR), retired by C&D, replaced by UPS12-545PLP |
| Battery Type | AGM, valve regulated lead acid (VRLA), high rate |
| Nominal Voltage | 12V (6 cells per unit) |
| Nominal Capacity | 149 Ah at the 20-hour rate to 1.75 VPC at 25°C (77°F) |
| Watts Per Cell | 537 W per cell at the 15-minute rate to 1.67 VPC at 77°F |
| Constant Power to 1.75 VPC | 728 W/cell at 5 min, 564 at 10 min, 471 at 15 min, 406 at 20 min, 318 at 30 min, 191 at 60 min, 136 at 90 min |
| Constant Power to 1.67 VPC | 875 W/cell at 5 min, 657 at 10 min, 537 at 15 min, 451 at 20 min, 343 at 30 min, 198 at 60 min, 139 at 90 min |
| Terminal Type | Top terminal, threaded insert, 1/4-20 UNC bolt |
| Terminal Torque | 110 in-lbs (12.4 N-m) |
| Length | 13.57 inches (344.7 mm) |
| Width | 6.80 inches (172.7 mm) |
| Height | 10.81 inches to case top (274.5 mm) |
| Total Height | 10.93 inches over terminals (277.7 mm) |
| Weight | 100 lbs (45 kg) |
| Short Circuit Current | 5,000 A at 0.1 second |
| Impedance | 0.0023 ohms at 60 Hz (reference figure; C&D recommends individual baselines) |
| Design Life | 10 year design life at 25°C (C&D) |
| Warranty | 3 years at 25°C (77°F) (C&D Form 41-9027, UPS High Rate Max series) |
| Minimum Order | 4 units |
Where This Battery Is Used
- Large three-phase UPS strings - forty blocks for 480 VDC behind a data hall module.
- Power generation plant switchgear - breaker trip and close power maintained on float between operations.
- Semiconductor manufacturing - fab tool power where an unplanned stop scraps work in progress.
Ordering and Freight
Frequently Asked Questions
Which other C&D blocks use the UPS12-540MR case?
The UPS12-490MR and the UPS12-600MR. All three measure 344.7 by 172.7 mm with 277.7 mm over the terminals, which is 13.57 by 6.80 by 10.93 inches. The 490MR and 540MR both weigh 100 lbs; the 600MR is 109. Because the envelopes match, a cabinet cut for one accepts any of the three, and the choice has to be made on the rating your UPS was sized against.
What does a UPS12-540MR hold over a 90-minute discharge?
136 watts per cell to 1.75 volts per cell, or 139 to 1.67, at 77°F. That is 816 watts per block at the 1.75 end point, so a forty-block string holds roughly 32.6 kW for an hour and a half. The block is sized for short high-rate work and the ninety-minute column is the far end of its table, but C&D publishes it, so a long ride-through can be checked against a published figure.
How many UPS12-540MR blocks does a 480 VDC string take?
Forty, at a nominal 12V each. C&D's installation guide puts data center UPS systems between 72 and 480 VDC and notes that capacity is raised by paralleling series strings, never by lengthening one. Above 24 cells in series, which is four blocks, the guide also calls for a freshening charge before the string goes into service.
What baseline readings should I record on a new UPS12-540MR?
C&D publishes 0.0023 ohms at 60 Hz and 5,000 amps short-circuit current at 0.1 second for this model, and marks the impedance figure for reference only. Take your own ohmic reading on every numbered block at installation and trend the change over time; technical bulletin 41-7271 covers the method and 41-7264 covers the high-rate momentary load test.
Send the quantity, your delivery ZIP and your requested-by date. A specialist confirms availability, the warranty term, volume pricing and freight in writing, with no obligation to buy.
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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