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12 Volt 21 Watt Sealed Lead Acid Rechargeable Battery

12 Volt 21 Watt Sealed Lead Acid Rechargeable Battery
BM Part #: SLA-HC1221W
Today's Price $22.95
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Warranty: 1 Year
View Full List of OEM numbers and models


Specifications: Features:
BM Part #: SLA-HC1221W
Voltage: 12 Volt
Capacity: 5.5 Ah 21 Watt
Type: Sealed Lead Acid Battery
Warranty: 1 Year
Shipping Weight: 5.00 Pounds
Length: 5.50"
Width: 1.89"
Height: 4.07"
  • Rechargeable
  • Recyclable
  • No Memory Effect

Brand New First Quality Factory Direct

If you are using these batteries for a UPS please verify the quantity needed by looking in the owners manual, checking inside the UPS or calling us.

Sealed Maintenance Free

The valve regulated, spill-proof construction of this battery allows trouble-free, safe operation in any position. There is no need to add electrolyte, as gases generated during charging are recombined in a unique "oxygen cycle".

Long Service Life

A dependable service life can be expected under normal operating conditions.

Long Shelf Life

Low self-discharge rate allows for storage of fully charged batteries for longer periods of time before charging is required. Lower storage temperatures will further extend shelf life.

Wide Operating Temperature Range

May be discharged over a temperature range of -40°C to +60°C (-40°F to +140°F), and charged at temperatures ranging from -20°C to +50°C (4°F to +122°F).

Rugged Construction

The high-impact resistant battery case is made either of non-conductive ABS plastic or styrene. Large capacity batteries frequently have polypropylene cases, all of these materials impart great resistance to shock, vibration, chemicals and heat.


  • RBC10, RBC21 equivalent Also replaces APC BF400
  • 12V 5.5Ah
  • Length 5.50 in.
  • Width 1.89 in.
  • Height 4.07 in.
  • Terminal Plug-in Positive Terminal is F2 (1/4") and negative Terminal is F1 (3/16")
  • 1 Year Warranty
  • APC Installation: (Adobe PDF)

The 12 Volt 21 Watt Sealed Lead Acid Rechargeable Battery has been cross-referenced to be compatible and replace these OEM part numbers and models:

  • BF400
  • BP5.5-12RT
  • DJW12-5.5
  • HC1217W
  • LP12-6H
  • LP12-6H-NT1/PT2
  • PS-1251FP
  • RBC10
  • RBC21
  • SLA0093
  • SLA0128
  • SLA0138
  • SLA1031
  • SLA1053
  • SP12-5.5RT
  • TH1221WB
  • WP1221W
  • BF400C
  • BF500
  • BF500BB
  • BF500U
  • SU700RM
  • SU700RMNET
  • SU700RMI

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