12 Volt 21 Watt AGM with recessed terminal

Enerwatt

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Power your UPS system with this 12V 4.5Ah 21W AGM battery featuring recessed terminals and maintenance-free, spill-proof performance.

$45.00

4 in stock

SKU: WP1221W Category: Brand:

Description

The 12V 21W AGM battery (4.5Ah) delivers reliable standby power for UPS systems. Designed with recessed terminals for secure connections, this fully sealed battery provides safe, spill-proof operation and consistent performance.

Compatible With / Replaces

The WP1221W is a compatible replacement for CSB HC1221W, APC RBC10, APC RBC21 and more.

Key Features

  • Sealed AGM design – Spill-proof and completely maintenance-free.
  • Rechargeable VRLA battery – Safe for indoor standby use under normal operating conditions.
  • Vibration-resistant construction – Durable case for long service life.
  • Low self-discharge – Ideal for backup and standby power systems.
  • 3–5 year standby design life – Built for dependable long-term performance.

Specifications

  • Voltage: 12 Volts
  • Capacity: 4.5 Ah
  • Output Rating: 21 Watts
  • Chemistry:  AGM
  • Length: 5.51″ / 140 mm
  • Width: 1.89″ / 48 mm
  • Height: 4.25″ / 108 mm
  • Weight: 3.65 lbs / 1.65 kg
  • Terminal Type: Recessed –  positive is the width of an F2 terminal (.25″) and negative is the width of an F1 terminal (.187″)
  • Data Sheet: WP1221W Specifications (PDF)

12V 21W 4.5Ah AGM UPS replacement battery with recessed terminals for dependable standby power performance.

Additional information

Weight 3.65 lbs
Dimensions 5.51 × 1.89 × 4.3 in
Application

UPS

Chemistry

Voltage

Capacity

5 AH

Brand

Enerwatt

HC1221W

12V 21W

12 Volt 21 Watt

RBC21

RBC10