Description
Tempest TH1221WB 12V 4.5Ah Sealed Lead Acid Battery RBC10 RBC21 HC1217W F1 F2
The Tempest TH1221WB is a 12-volt, 4.5 amp-hour valve-regulated lead acid (VRLA) battery designed as a direct replacement in UPS battery backup systems, emergency lighting, and small standby power applications. It is a sealed, maintenance-free design — no electrolyte to add and no venting required under normal operating conditions. This battery is compatible with the APC RBC10 and RBC21 battery cartridges and replaces the HC1217W battery.
Specifications & What's Included
- Brand: Tempest / IMC
- Model: TH1221WB
- Voltage: 12V
- Capacity: 4.5Ah
- Battery Type: Valve Regulated Lead Acid (VRLA) — sealed, maintenance-free
- Terminal Type: F1 (0.187") and F2 (0.250") Faston/spade tabs
- Length: 5.51 in
- Width: 1.89 in
- Height (case): 4.06 in
- Height (including terminals): 4.09 in
- Compatible Replacement Part Numbers: HC1217W, RBC10, RBC21
- Certifications: CE, ISO 9001 (marked on label)
- Includes: Battery only — no cables or accessories
Applications
Sealed lead acid batteries in this size and voltage rating are widely used as replacement cells in consumer and small-business UPS (uninterruptible power supply) units, particularly APC Back-UPS and similar products that use the RBC10 and RBC21 battery cartridges. They are also commonly found in emergency lighting fixtures, alarm and security systems, medical equipment backup power, and other small standby power roles. The F1/F2 dual-tab terminal configuration is a standard design that makes the battery drop-in compatible across a broad range of OEM applications without modification. This battery format became a near-universal standard for small UPS and standby systems through the 1990s and 2000s and remains widely used today in replacement and maintenance applications.
This Tempest TH1221WB 12V 4.5Ah sealed lead acid UPS battery is in used condition and has been pulled from a working environment. It has been visually inspected and photographed. The case shows light surface scratching, most noticeable on the top near the terminal recesses, which is typical for a battery of this age and service history. The terminals appear intact with no corrosion visible. As with all used SLA batteries, capacity cannot be guaranteed — buyers should test the battery in their application upon receipt. Please review all photos and contact us with any questions before purchasing.
Warranty Information
Additional Information
Brand: |
Tempest |
Model: |
TH1221WB |
MPN: |
TH1221WB |
SKU: |
31911 |
Type: |
Sealed Lead Acid (SLA) / VRLA Battery |
Voltage: |
12V |
Capacity: |
4.5Ah |
Battery Chemistry: |
Valve Regulated Lead Acid (VRLA) |
Terminal Type: |
F1 (0.187") and F2 (0.250") Faston tabs |
Compatible Part Numbers: |
HC1217W, RBC10, RBC21 |
Length: |
5.51 in |
Width: |
1.89 in |
Height (with terminals): |
4.09 in |
Height (case only): |
4.06 in |
Certifications: |
CE, ISO 9001 |
Application: |
UPS Battery Backup Replacement |
Seller Notes: |
Battery only — no cables or accessories included. |
Country/Region of Manufacture: |
China |
Form Factor: |
Compact SLA / UPS Replacement |
Condition Notes: |
This Tempest TH1221WB 12V 4.5Ah SLA battery is in used condition, pulled from a working environment. Case shows light surface scratching; terminals appear clean with no visible corrosion. Capacity not guaranteed — test upon receipt. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |