APC Symmetra LX Battery Module 120V Sealed Lead-Acid SYBT5

Key Features

• Genuine APC battery module, part number SYBT5, not an aftermarket equivalent built to the same dimensions.
• Rated 120 V.
• Sealed lead-acid chemistry, sealed and maintenance-free in normal service.
• Measures 5.5 in (140 mm) H x 8.3 in (210 mm) W x 21.5 in (546 mm) D.
• Weighs 64.2 lb (29.1 kg), so treat it as a two-person lift.
• Fitment is confirmed against your UPS model number before dispatch rather than guessed from a published cross-reference.
• Backed by 24 months.

Key Specifications

• Part type: Genuine APC battery module
• Nominal voltage: 120 V
• Chemistry: Sealed lead-acid
• Dimensions: 5.5 in (140 mm) H x 8.3 in (210 mm) W x 21.5 in (546 mm) D
• Net weight: 64.2 lb (29.1 kg)
• Supplied with: Installation guide
• Fitment: Confirmed against your UPS model number before dispatch
• Warranty: 24 months

What this part is

The SYBT5 is a battery module made and branded by APC, which is the distinction that matters most on a part like this. A UPS battery is not a commodity cell in a box. APC assembles the cells into a tray or enclosure with the connectors, fusing and spacing the host unit expects, and the unit's own charger and runtime calibration are built around that assembly. Third-party cartridges built to the same outline exist and are cheaper. They also put an unverified assembly inside the one device whose entire job is being the thing that does not fail, which is a poor place to save money.

Electrical rating

This cartridge is rated 120 V. APC's data sheet for this part number prints no amp-hour figure, so we do not publish one. Chemistry is sealed lead-acid, sealed and valve-regulated. In practice the electrical rating is not the number you order against anyway. The cartridge either seats and connects in your UPS or it does not, and that is decided by the part number, not by matching volts and amp-hours to something similar. Sealed lead-acid cells are consumables with a service life measured in years rather than decades, and heat is what shortens it. A cartridge in a warm cupboard will need replacing well before the same part in a ventilated rack.

Fitment before ordering

Order against your UPS model number, not against this cartridge's dimensions. APC publishes no compatibility list on this part's own data sheet. There is an APC cross-reference document covering the whole range, but it is not reproduced here: a fitment list that is wrong in one row costs you a return and a UPS that is still down, which is worse than not publishing one at all. So the process is simple. Send us the model number printed on the front or the rear label of your UPS, and we will confirm whether this is the correct cartridge for it before anything ships. If it is not, we will tell you which one is.

Handling and installation

Physically the cartridge is 5.5 in (140 mm) H x 8.3 in (210 mm) W x 21.5 in (546 mm) D. It weighs 64.2 lb (29.1 kg). At that weight it is a two-person lift, and it wants a flat approach rather than an awkward reach into the back of a rack. APC does not publish a hot-swap statement for this part number on its data sheet, so we do not make one. Some Smart-UPS models genuinely support a live cartridge change and some require a shutdown; check the manual for your specific UPS before planning the work, or ask us and we will check it with you.

Included and warranty

APC lists the following supplied with this part number: Installation guide. Warranty is 24 months. Keep the packaging until the swap is done. APC ships these in reusable cartons specifically so the old cartridge has something safe to travel back in, and a recycler will generally want it boxed rather than loose. If you would rather we confirmed the part against your UPS before it ships, say so when you order and we will do exactly that. One practical note on timing: batteries age on the shelf as well as in service, so there is little value in buying a spare years ahead of needing it. Order when the UPS starts reporting a failed self test, or when the existing cartridge reaches the age at which your site replaces them as a matter of routine.

If you are renewing the batteries in an APC Smart-UPS and this is the cartridge your unit calls for, the SYBT5 is the genuine part and we hold it in stock. Send us your UPS model number and we will confirm the fit before anything ships. Contact us to learn more or secure this solution for your business today.