CyberPower RB1270B teardown
- Inside
- 1 x 12 V 7.2 Ah
- Wiring
- 12 V single
- List price
- $50
- Cell size
- 151 x 65 x 94 mm
- Terminal
- F2
- Evidence on cell count
- verified
What is inside the RB1270B?
RB1270B holds one 12 V block rated 7.2 Ah, giving a 12 V bus. CyberPower publishes the cell count. There is no series string to balance, so it is the simplest swap here. Check the label on your old block before ordering a replacement.
| Field | Value | Quote | Source |
|---|---|---|---|
| cells | 1 | Battery Quantity | 1 | T1 cyberpowersystems.com |
| cell ah | 7.2 | Battery Size | 12 V / 7.2 Ah | T1 cyberpowersystems.com |
| envelope mm | null | Battery Size | T1 cyberpowersystems.com |
| msrp usd | 50 | MSRP | $50 | T1 cyberpowersystems.com |
| envelope in | 5.97 x 3.7 x 2.57 | Dimensions – W×H×D (in.): 5.97 × 3.7 × 2.57 | T1 cyberpowersystems.com |
| terminal | F2 | 12V 7Ah F2 Replacement Battery Compatible with CyberPower RB1270B | T2 walmart.com |
Which UPS models use the RB1270B?
Of the 35 models we track, RB1270B fits EC850LCD. That list comes from the manufacturer's pages, and they sometimes disagree with reseller listings. Where a model splits by serial number, its UPS page shows which prefix takes this cartridge, so check your label before you order.
| UPS | Rating | Serial condition |
|---|---|---|
| EC850LCD | 850 VA / 510 W | all serials |
Which bare cells replace the RB1270B?
Replace RB1270B with one 12V 9 Ah F2 (same case as 7 Ah) cell and reuse the factory harness. CyberPower lists 5.97 x 3.7 x 2.57 in. The terminal comes from a retailer cross-reference or inference, so check your old cell first. Keep the old harness, because bare cells ship without leads.
Can LiFePO4 replace the RB1270B?
A 12.8 V LiFePO4 pack fits the RB1270B bay, but its BMS sets the limit. A 12 A BMS allows about 118 W on this 12 V bus. A single pack has no series balance problem to manage. Measure your real load before you buy.
At the listing's 20 A claim the ceiling is 197 W, and at 12 A it is 118 W. Why that matters.
How much does the RB1270B cost against bare cells?
RB1270B lists at $50. One bare cell costs about $34.94 at a non-Amazon single-unit reference price, a saving of roughly 30%. The reference is a CSB block at one store, and it is not an Amazon price. Reusing the harness is what makes this work.
Official RB1270B MSRP: $50. Typical Commodity Bare-Cell Band (Non-Amazon Reference): about $34.94 for 1 x CSB HR1234WF2. Reuse your factory wire harness to save about 30% against the OEM cartridge MSRP.