Emerson 300 UPS System Battery
OSI Batteries is your One Source for Emerson UPS System replacement batteries. CP12120F2 is a high quality aftermarket battery that fits Emerson 300 model uninterruptible power supply systems.
Emerson 300 Requires 2 batteries per unit please add to cart accordingly.
We recommend checking your existing battery for size and specifications prior to ordering as manufacturers may change requirements without notice. The original batteries in many UPS Systems are tied together with wire harnesses and/or fuses; we recommend that you save these in order to reuse them with your replacement batteries.
Emerson 300 Requires 2 batteries per unit please add to cart accordingly.
We recommend checking your existing battery for size and specifications prior to ordering as manufacturers may change requirements without notice. The original batteries in many UPS Systems are tied together with wire harnesses and/or fuses; we recommend that you save these in order to reuse them with your replacement batteries.
| Chemistry: | Rechargeable Sealed Lead Acid |
| Nominal Voltage: | 12v |
| Nominal Capacity: | 12Ah |
| Dimensions (In.): | 5.94 x 3.86 x 3.74 |
| Terminals: | .250" |
| Weight (lbs): | 8.1 |
| Warranty: | 12 months |
| Condition: | Brand New |
| Notes: | 3-5 Year Design Life |
Reviews
We're currently collecting product reviews for this item. In the meantime, here are some reviews from our past customers sharing their overall shopping experience.
4.7
Out of 5.0
Overall Rating
96%
of customers that buyfrom this merchant give
them a 4 or 5-Star rating.
April 13, 2026 by Pilar C. (CA, US)
“Reasonable price. Would love to have shipping to be free or less but all in all shopping was a breeze.”
April 13, 2026 by guillermo M. (FL, US)
“todo bien”
April 12, 2026 by Clinton D. (AR, US)
“Knew what I wanted easy to find”
