CyberPower BC Series Replacement Batteries

About CyberPower BC Series Replacement Batteries

CyberPower BC series replacement batteries

The CyberPower BC series is a line of desktop and mini-tower battery backup (UPS) units built to protect home and small-office equipment from power loss, surges, and brownouts. Like every UPS, a BC unit relies on sealed lead-acid (SLA / AGM) batteries inside the chassis. These batteries wear out long before the electronics do, so a fresh, correctly matched battery set restores the unit to full runtime without the cost of a new UPS.

Battery type and how runtime scales

BC series units use sealed lead-acid AGM cells built around 12-volt blocks rated about 7-9 amp-hours each. These desktop units pair two 12-volt blocks wired in series to form a 24-volt battery pack, so each set in this collection is a matched pair. What changes from model to model is the amp-hour rating - commonly 7 Ah or 9 Ah - which is why the sets here differ and why you should match by your exact model rather than by capacity alone. Runtime scales with amp-hours and with how much load you connect: a lightly loaded unit runs much longer than one near its rated capacity.

Identify your unit by its exact model

Find the model number on the label on the bottom or rear of your UPS (for example, BC900, BC900D, BC1200, BC1200D, BC1285C, BC1500C, or BC1500D). The letter and number suffixes matter - a BC900 and a BC900D, or a BC1500C and a BC1500D, can take different battery configurations. Confirm the exact model, then choose the matching set on this page. Each product listing shows the voltage and amp-hour specification for that set, so you can verify the fit before you order.

Genuine OEM versus aftermarket batteries

You have two options when a UPS battery fails: a genuine OEM replacement sold under the manufacturer's own part number, or a compatible aftermarket battery built to the same form factor, voltage, and amp-hour rating. The batteries in this collection are quality aftermarket replacement sets - they meet or exceed the original electrical and physical specifications and drop into the same battery compartment. Aftermarket sets typically cost less than OEM-branded packs while delivering equivalent runtime, which is why most owners choose them for routine battery refreshes.

Battery lifespan and the heat factor

Sealed lead-acid UPS batteries generally last about 3 to 5 years before they lose enough capacity to need replacement. Heat is the single biggest factor that shortens that life: as a rule of thumb, every roughly 8°C (about 15°F) of sustained temperature above 25°C (77°F) can cut battery life roughly in half. Keep your UPS in a cool, ventilated spot away from heat sources, sunlight, and tightly enclosed cabinets to get the full service life from a new set.

How to replace the battery

CyberPower BC series units are desktop / mini-tower UPS devices. These are not hot-swappable - hot-swapping (changing batteries while the unit stays powered and protecting the load) applies only to rack-mount, Smart-UPS-style, and online (double-conversion) systems with a serviceable front battery tray. For a desktop BC unit, follow these steps:

1. Save your work and shut down connected equipment.
2. Turn the UPS off and unplug it from the wall outlet.
3. Open the battery compartment (usually a panel on the bottom or rear, held by a few screws or clips).
4. Note how the existing batteries are oriented and wired, then disconnect and remove the old set.
5. Install the new set in the same orientation, reconnecting the terminals to match the original wiring.
6. Close the compartment, plug the UPS back in, power it on, and let it charge fully (often 8-16 hours) before relying on it for backup.
7. Recycle the old lead-acid batteries at an appropriate collection point - they are fully recyclable and should not go in household trash.

Frequently asked questions

How do I know which battery set fits my UPS?
Match by the exact model number printed on your unit's label. Then confirm the voltage and amp-hours shown on the product page match what your model requires.

Are these genuine CyberPower batteries?
No - these are compatible aftermarket replacement sets built to the same specifications. They fit and perform like the originals at a lower cost.

How long will a new battery set last?
Typically 3 to 5 years, depending mostly on operating temperature and how often the unit discharges. Cooler environments extend life significantly.

Can I replace the battery myself?
Yes. BC series units are user-serviceable. Power down and unplug the UPS first, then swap the set following the steps above. No special tools are usually required beyond a screwdriver.

Where do these ship from?
All sets ship from our Canadian warehouse for fast domestic delivery.

CyberPower and BC are trademarks of Cyber Power Systems, Inc. UPSPLUSBATTERY.ca is not affiliated with, endorsed by, or authorized by the manufacturer; aftermarket batteries are compatible replacements.