Your UPS is beeping again and the lead-acid pack finally gave out. You don't have time to hunt for a replacement that actually slots into your existing rack.
This is the drop-in lithium-ion battery pack built for APC Smart-UPS Ultra SRTL3K and SRTL2K2 systems. 1U, 50 V, Li-Ion chemistry. It mounts in your rack or stands tower-style — brackets come in the box. Plug it in, power up, done.
Need more runtime? Chain up to 10 external packs on the same UPS. No re-cabling, no guesswork.
Operating range is 0–40 °C at 0–95 % relative humidity (non-condensing). Storage sits comfortably from −15 to 45 °C. Altitude-rated to 10 000 ft for operation, 15 240 m for storage.
One CTA: Add to cart and it's on its way to your server room before the next outage window
| 0 | APC Smart-UPS Ultra SRTL3K |
| 1 | APC Smart-UPS Ultra SRTL2K2 |
| 0 | Rack mounted (kit included) |
| 1 | Tower mounted (kit included) |
| 0 | Rack mounting brackets |
| 1 | Vertical mounting brackets |
| brand | APC |
| model | SRTL50RMBP1U-LI |
| battery_type | Lithium-Ion (Li-Ion) |
| battery_voltage | 50 V |
| rack_units | 1U |
| max_external_batteries | 10 |
| operating_temperature | 0 to 40 °C |
| storage_temperature | -15 to 45 °C |
| operating_humidity | 0–95 % RH non-condensing |
| storage_humidity | 0–95 % RH non-condensing |
| operating_altitude | 0–10 000 ft (3 048 m) |
| storage_altitude | 0–15 240 m |
