Designed for their M1100XL Medical Grade UPS, the RB1290X3B UPS Replacement Batteries from CyberPower will replace batteries that have been weakened or completely depleted, thereby restoring life to your UPS. The RB1290X3B contains three leakproof and sealed lead-acid batteries with a capacity of 12V / 9Ah. They are OEM-certified to the manufacturing standards of your UPS' original battery, its pre-assembled cartridges can be installed by the user, and the battery fluid does not require maintenance. Included is reusable packaging, which provides for the delivering of expired batteries to a recycling center, and protection is provided by a limited 18-month warranty, which covers defects in materials and workmanship under normal use and conditions, starting from the purchase date.

For the CyberPower M1100XL UPS    Leakproof and Sealed Lead-Acid Batteries    Battery Capacity: 12V / 9Ah    Maintenance-Free Battery Fluid    Pre-Assembled Cartridge    User Installable & OEM Certified    Includes Reusable Packaging

M1100XL Medical Grade UPS

Supplies high surge current, provides robust power-to-weight ratio, and is cost-effective.

The battery fluid does not require replacement.

The leak-proof casing protects the sealed lead-acid battery and prolongs the battery's life.

A user-installable cartridge allows for quick and convenient installation. Each cartridge is pre-assembled.

Reusable packaging provides for conveniently delivering expired batteries to a recycling center. After installing the new cartridge, place the old one in the reusable packaging.

CyberPower batteries meet or exceed original manufacturer specifications.

This warranty covers defects in materials and workmanship in the product under normal use and conditions within eighteen months of the purchase date.

Related Questions and Answers

Q: 1. I have 220V, so is a different versin available? Or do you need a transformer

A: This unit doesn't support 220V and we don't have a transformer that will work with this UPS.

Q: 2. Can it be safely used on its side?

A: Generally it is not recommended to use the CyberPower AVR Series CP900AVR UPS this way.

Q: 3. Says takes 2 12 volt batteries? Hard to believe. Can't find a small 12 v battery that would fit.

A: Yes, the CyberPower AVR Series CP900AVR UPS, B&H # CYP900AV, does take two 12V batteries. The specific battery that is listed on CyberPower's website for this unit is not currently for sale at B&H: https://bit.ly/3UrEbwh.

Q: 4. Can this be used horizontally and the lcd screen rotated?

A: No it is not able to do so.

Q: 5. Can this be used to power strobes as it's a pure sine wave?

A: Yes. As long as your flash head is no more than 720 Watt second. I have tested this UPS with my Profoto Acute2R 2400 power pack with one Profoto Acute/D4 Head. The power pack must be set to the minimum setting of 1/4 power output. Otherwise, the UPS will shut down. Be gentle transporting the UPS to photoshoot locations and ensure the vents near the bottom side panels have proper clearance.

Q: 6. What is the battery life after power is disconnected?

A: There is no simple answer to that question, as it depends on what the load is. It could be 30 minutes or it could be 5 minutes. A small, low power computer with the monitor not on battery might last 30-40 minutes, where a PC with a large power supply, high power video card, 4 hard drives, and three 27 monitors all connected to battery will go pretty fast. If you know the actual power requirements of your connected gear, you can approximate with your own math. If unsure, get a bigger unit.

Q: 7. Does it convert voltage from 220 volts to 120 volts?

A: This is a backup power supply that will provide 120 VAC in case of a power failure. The input and output are 120 VAC, so NO conversion.

Q: 8. Can I plug in a power conditioner to this (Furman SS-6B Power Strip) or would that be redundant, or cause a problem? I’m in residential with power issues that are causing odd hums in audio recordings, and the electrician says a UPC is the way to go, but the studio engineer says a power conditioner is necessary.

A: I'm an electrician and concur with the other answers, you need to look into grounding issues, specifically what's called a "ground loop". As for the UPS, it won't fix this issue, it fixes voltage and power factor issues as well as backup power of course, but it won't hurt anything either. They do make "ground loop isolators" that may do the trick, but sometimes won't help either.

Q: 9. Does it come with rack mounts that attach to the sides of the unit?

A: Rackmounts are included with the CyberPower PFC Sinewave 2000VA UPS.

Q: 10. can this be mounted underneath my standing desk's tabletop?

A: We do not currently carry a mounting bracket for this UPS, but it may be possible to mount the CyberPower SL700U underneath a desk with hook and loop fasteners or similar hardware.