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Black rectangular sealed lead-acid battery with two terminals

Battery Technology Inc.

Battery Technology Inc. SLA4-BTI UPS Replacement Battery 620 650 750

SKU CH-Y7NN-M5ZR7 MPN SLA4-BTI

Compatible replacement battery for APC UPS models rated 620, 650 and 750 VA

  • Product typeBattery
  • Compatible withBK650M, BK650MC, BP650PNP, BP650S, BP650SC, BP650IPNP, SU620
  • Key featuresOEM number(s):RBC4
  • OEM-compatible replacement for APC RBC4 models
  • Fits BK650M, SU620NET, BE750BB and more
  • Ready-to-install sealed lead-acid battery
  • Direct drop-in for 620, 650, 750 VA units
  • Brand-new condition ensures full runtime capacity

Direct replacement for APC UPS units

This sealed lead-acid battery replaces the RBC4 module used in APC Back-UPS and Smart-UPS models such as the BK650M, BK650MC, BP650PNP, BP650S, BP650SC, BP650IPNP, SU620NET, SUVS650, SC620, and BE750BB. It restores backup runtime to the original specification for connected equipment.

No extra accessories or software included

The package contains only the replacement battery cell assembly. No mounting brackets, cables, or configuration utilities are supplied, so the existing hardware and management software in the UPS remain unchanged after the swap.

Simple user installation with polarity care

The battery slides into the UPS compartment after removing the front cover or battery door; no tools are typically required. The most common issue is reversing the connector polarity, which prevents the UPS from recognising the new pack and can trigger a fault alarm.

How it compares

Measured against everything we stock in UPS Replacement Batteries, at today’s prices. Recalculated every night.

Price $51.99
Pricier than about 61% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand nameBTI
Model nameSLA4-BTI
Product typeBattery
Size & build
Shipping weight4.54 kg
Package size203 × 152 × 76 mm
Compatibility
Compatible withBK650M, BK650MC, BP650PNP, BP650S, BP650SC, BP650IPNP, SU620NET, SUVS650, SC620, BE750BB, RBC4

Questions about this item

How often will the SLA4-BTI sealed lead-acid battery need replacement under normal UPS cycling?

The SLA4-BTI is a sealed lead-acid cell rated for typical UPS float service; plan on swapping it every three to five years depending on discharge depth and ambient temperature.

What capacity limit appears first when the SLA4-BTI runs a prolonged outage on a 750 VA load?

At 750 VA the battery’s ampere-hour reserve is the limiting factor — runtime drops to minutes once the stored charge is depleted.

How much heat does the SLA4-BTI generate while trickle-charging inside a BK650M cabinet all day?

Trickle charge current is low, so the SLA4-BTI adds only modest warmth to the UPS enclosure during continuous float operation.

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