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SigmasTek  |  SKU: BW-3070

Best Power BTG-0303 UPS High Performance Replacement Battery Set 21.02 lb

15% off
New arrival
Sale price $105.99 USD Regular price $123.99
Shipping calculated at checkout.
Includes 4 SigmasTek SP12-7.5HR batteries (12V 7.5 AH), factory fresh
Spill-proof valve regulated design for leak-free safety
High vibration resistance for stability in tough conditions
Ideal for emergency power and UPS applications
Comes with 1 year warranty and fast shipping
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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Volts & Amps

12 Volts | 7.5 Ah

Terminal Type

F2

Replacement Battery Set for Best Power BTG-0303 UPS - SigmasTek SP12-7.5HR (4-pack)

When your Best Power BTG-0303 Uninterruptible Power Supply (UPS) needs fresh cells, this replacement battery set delivers reliable runtime and consistent performance. This kit includes four SigmasTek SP12-7.5HR batteries (12 Volts, 7.5 AH) built for high rate discharge applications. These brand new, factory-tested batteries are an ideal replacement UPS battery to bring your BTG-0303 back to dependable operation.

Key Specifications

  • Battery model: SigmasTek SP12-7.5HR
  • Quantity: 4 batteries per set
  • Voltage: 12 Volts
  • Capacity: 7.5 AH
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Feature: Low Self-discharge
  • Feature: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Connection note: Use all existing cables and hardware from original configuration to connect new UPS batteries
  • Brand: SigmasTek
  • Compatible UPS model: Best Power BTG-0303

Benefits

  • Safe, maintenance-free design: Valve regulated and spill proof for safe mounting and service in a variety of environments.
  • Long-lasting readiness: Low self-discharge preserves charge during storage so these batteries remain ready — a reliable long-lasting battery choice for emergency or standby systems.
  • Power when you need it: High rate discharge design supports short bursts of higher power demand, making this a true high-performance UPS battery replacement.
  • Resilient under vibration: High vibration resistance helps maintain performance in less-than-ideal mechanical conditions.
  • Suitable uses: Perfect for Uninterruptible Power Supply (UPS) units such as the BTG-0303, emergency power supply systems, and battery powered tools that require dependable backup energy.
  • Factory-tested assurance: Each set is tested by experienced staff to meet or exceed OEM specs, giving you confidence in compatibility and performance.

Get your Best Power BTG-0303 back to full capability with this replacement UPS battery set. Buy now to enjoy fast shipping, knowledgeable customer service, and a 1 year warranty on a high-performance, long-lasting battery solution.

Technical Specifications

Voltage12 Volts
Amp Hours7.5 Ah
Terminal TypeF2
Length (in.)5.95
Width (in.)2.56
Height (in.)3.7
Weight (lb.)21.0

Product Highlights

  • Brand Replacement : Best Power
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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