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APC Replacement Battery Cartridge 43 Review: Reliable UPS replacement for home and office?

APC 2702339 Replacement Battery Cartridge 43 - UPS battery Lead Acid
4.7
[Sleek Grey Design]  Neutral grey finish complements any workspace or setup.
[Single Item Package]  Includes one complete peripheral unit for immediate use or replacement.
[One-piece Construction]  Compact single-piece build simplifies setup and reduces cable clutter.
[Space-saving Profile]  Compact form minimizes desktop footprint for cleaner, organized workspaces.
[Ideal Replacement Unit]  Perfect as a spare or replacement peripheral for quick device recovery.
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UPS battery replacement that restores backup power for APC units, sold as a single grey cartridge, APC Replacement Battery Cartridge 43. Peace of mind for those who rely on uninterrupted work and home networking. Is compatibility and an easy swap enough to keep ageing UPS hardware running?

⚡ At a Glance
  • Battery Type: Sealed lead acid chemistry for conventional UPS backup
  • Best for: Owners of APC UPS units who need a direct replacement cartridge
  • Not ideal for: Users seeking alternative battery chemistries or multi-pack replacements

Single grey replacement cartridge supplied as one item. User feedback indicates straightforward compatibility and immediate operation upon installation.


Quick, straightforward swap – with a single-unit replacement cartridge

Supplied as one cartridge and configured to fit APC UPS battery bays, enabling a direct physical replacement. User reviews report the unit works immediately after fitting, which suggests a plug-and-play approach.

Minimal downtime during replacement and no need for complex wiring or adapter parts. Ideal for users who need a fast, reliable battery exchange.

Dependable backup start-up – with sealed lead-acid chemistry

Lead-acid cells store energy chemically and deliver DC output when mains power fails, a long-established approach in UPS systems. The listing explicitly identifies lead acid as the battery chemistry.

Predictable behaviour during power outages and compatibility with many existing APC UPS designs. Suitable for standard backup needs rather than specialised high-density applications.

Simple inventory management – with one-piece packaging

Number of items and pieces is specified as one, so each purchase supplies a single replacement cartridge ready for immediate use. Colour and form factor align with common APC chassis designs per the product description.

Easier to stock and plan replacements for individual UPS units, especially in small offices or home setups. Reduces confusion over matching multiple components during maintenance.

✨ The 4 Key Reasons for APC Replacement Battery Cartridge 43
  1. Plug-and-play cartridge - Replaces expired battery quickly with no specialised tools required
  2. Immediate operation - Starts supplying backup power as soon as installed
  3. Single replacement unit - Supplied as one cartridge for straightforward stock and install
  4. Grey finish - Matches common UPS chassis for unobtrusive installation in office environments
📋 Technical Details at a Glance
  • Category: UPS replacement battery
  • Brand: APC
  • Model: Replacement Battery Cartridge 43
  • Chemistry: Lead acid
  • Colour: Grey
❓ Frequently Asked Questions

Q: Is this compatible with APC UPS units?

A: Yes. User feedback explicitly notes compatibility with APC UPS replacements.

Q: Will the battery work immediately after fitting?

A: Customers report the battery works immediately upon installation, indicating it arrives ready to fit.

Q: How many cartridges are included in the purchase?

A: The listing specifies one item and one piece, so a single replacement cartridge is supplied.

🏆 Our Verdict

Suitable for owners of APC UPS units who need a straightforward lead-acid replacement cartridge. The single-piece grey cartridge design and user reports of immediate operation make it a practical choice for restoring backup capability. Offers solid long-term value by returning reliable UPS function with an established battery chemistry.