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SigmasTek  |  SKU: BW-16773

FirstPower FP12120HR High Performance Replacement Battery

Sale price $25.99 USD Regular price $38.61
Shipping calculated at checkout.

➤ Absorbent Glass Mat (AGM) technology for enhanced performance

➤ Maintenance-free design with spill-proof construction

➤ U.L. Recognized and CE Certified for safety and reliability

➤ Brand new, factory fresh condition ensures longevity

➤ Backed by a 1-year warranty for peace of mind


📦🚀 FAST SHIPPING: Usually ships same day if ordered before 2 PM EST

⚠️ Quick Reminder

🔹 Please ensure the original battery model number is listed in our product description and that your device model number matches for compatibility.
🔹 We only supply the batteries shown in the images. Device images are provided for reference only.

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Battery Care Guide

Battery Usage and Maintenance Guidelines 🔋

Please read the following instructions carefully before using your new battery. Proper adherence will help ensure optimal performance and extended service life.

1. Cordless Phones, PDAs, and Power Tools (NiMH, NiCd, Lithium-Ion) 📱

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Operate the device until the battery reaches approximately 20% capacity.
  • Avoid premature recharging.
  • Do not allow the battery to fully discharge during the initial cycles.

Post-Conditioning

  • Recharge the battery only when necessary.
  • These batteries are capable of approximately 500 charge cycles:
  • Once daily → ~500 days
    Twice daily → ~250 days
    Note: Even a partial recharge is considered a full cycle.

2. Sealed Lead Acid (SLA) Batteries 💡

  • No conditioning required.
  • Maintain the battery in a fully charged state; avoid complete discharge.
  • Capable of 300–400 charge cycles.
  • Expected service life: 2–3 years, depending on usage conditions.

3. Laptop Batteries (Lithium-Ion) 💻

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Charge fully, then discharge to approximately 20% capacity.
  • Avoid complete discharge, as some devices may not detect a fully drained battery.

Post-Conditioning

  • Minimize frequent plugging and unplugging.
  • Allow the battery to discharge moderately at least once per month to maintain optimal performance.
  • Occasional cycling is recommended to sustain battery health.

Professional Recommendation

Adhering to these guidelines will enhance battery longevity and ensure reliable performance.

For further assistance regarding your battery or order, our customer support team is available to provide guidance.

Delivery and Shipping

Everything You Need to Know About Shipping with BatteryWeb (USA)

We know reliable delivery matters when you need power fast. Here’s how BatteryWeb makes shipping easy across the USA:

🚚 Shipping & Delivery

Most orders ship next business day (some products like sealed lead acid may take a little longer).

Same-day shipping available if you order before 11:59 AM (delivery depends on the carrier).

We ship nationwide using FedEx, UPS, USPS, DHL, and regional ground carriers.

Shipping costs are calculated automatically at checkout based on weight, distance, and carrier.

Transit times shown are estimates only (business days, no weekends/holidays).

🌍 Shipping Restrictions

Lithium batteries cannot be shipped by USPS or air. They must go via FedEx Ground, UPS Ground, or DHL Ground.

PO Box deliveries are only available via USPS.

At this time, we do not ship lithium batteries to Puerto Rico. NiMH, NiCd, and Alkaline can be shipped.

📦 Important Notes

Double-check your shipping address! If an incorrect address is used and the order is returned, re-shipping costs are the buyer’s responsibility.

If a product is temporarily out of stock, we’ll notify you right away with the expected restock date—or issue a refund if you prefer.

💲 Currency & Pricing

All prices are shown in USD.

Orders shipped outside the USA may be subject to local taxes, customs fees, or import duties. These are the buyer’s responsibility.

⚡ At BatteryWeb, we’re committed to getting your batteries delivered quickly, safely, and affordably—so you’ll always have the power you need, when you need it.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

🔹 Our products are generic replacement parts and are not affiliated with, endorsed by, or manufactured by the original equipment manufacturers (OEMs).


Volts & Amps

12 Volts | 12 Ah

Terminal Type

F2

FirstPower FP12120HR Replacement Battery — Compatible with FirstPower FP12120HR

This high-quality replacement battery is engineered for reliable compatibility with the FirstPower FP12120HR model, delivering consistent performance when you need it most. Designed as a rechargeable Sealed Lead Acid (SLA) unit with Absorbent Glass Mat (AGM) technology, this FirstPower FP12120HR replacement battery gives you a maintenance-free, spill-proof power source for critical equipment. Whether replacing a worn OEM cell or stocking spare power for emergency systems, this high-performance battery meets or exceeds the original specifications to keep your devices running longer and more reliably.

Key Specifications

  • Compatible Model: FirstPower FP12120HR
  • Replacement Brand: SigmasTek
  • Battery Type: Rechargeable Sealed Lead Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Design: Maintenance-Free with Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Voltage: 12 Volts
  • Capacity: 12 Ah
  • Terminal Type: F2
  • Warranty: 1 Year Warranty

Benefits

Built for durability and dependable performance, this replacement battery combines AGM construction with a sealed, maintenance-free design to deliver a long-lasting battery solution you can trust. The Absorbent Glass Mat (AGM) technology minimizes internal resistance and improves charge acceptance, making the unit an excellent high-performance battery for repeated charge cycles. Its spill-proof construction protects equipment from leaks, while U.L. recognition and CE certification ensure it meets international safety and quality benchmarks.

Typical applications include uninterruptible power supplies (UPS), emergency lighting and backup systems, alarm and security equipment, medical devices, mobility aids, and other portable or stationary equipment where dependable power is essential. This FirstPower FP12120HR long-lasting battery is ideal for users who need consistent run times and dependable reserve capacity under frequent or emergency use.

Choosing this replacement battery means selecting a product that balances affordability with factory-fresh quality and a one-year warranty for peace of mind. If you need a dependable, high-performance battery that fits your FirstPower FP12120HR application, this SigmasTek replacement meets the mark.

Ready to restore dependable power? Order your FirstPower FP12120HR replacement battery today and enjoy reliable, long-lasting performance backed by a 1-year warranty.


Payment & Security

Payment methods

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