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SigmasTek  |  SKU: BW-3975

Leadman UPS UPS High Performance Replacement Battery

Sale price $14.91 USD Regular price $18.84
Shipping calculated at checkout.

➤ Durable AGM technology for dependable power supply

➤ High rate discharge supports emergency backup systems

➤ Maintenance-free and spill-proof for easy use

➤ U.L. recognized and CE certified for safety compliance

➤ Brand new with 1 year warranty, fits Leadman UPS


📦🚀 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 | 7.5 Ah

Terminal Type

F2

SigmasTek 12V 7.5Ah F2 Replacement UPS Battery — Compatible with Leadman UPS

Ensure dependable backup power for your Leadman UPS with this SigmasTek replacement UPS battery. Built to meet or exceed OEM SLA battery specifications, this long-lasting battery provides consistent performance and safe operation for a wide range of UPS models marketed under the Leadman name. It is an ideal, cost-effective option for maintaining uninterrupted power to critical equipment and preventing costly downtime.

Key Specifications

  • Brand: SigmasTek
  • Compatible UPS Model: Leadman UPS
  • Battery Type: Sealed Lead Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Voltage: 12 Volts
  • Capacity: 7.5 Ah
  • Terminal Type: F2
  • Design: High Rate Discharge Design
  • Maintenance: Maintenance-Free with Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Typical Applications: Emergency Power Supply, Battery Powered Tools

Benefits

This replacement UPS battery offers robust performance and proven durability for standby and emergency power applications. The AGM construction provides a safe, sealed environment that eliminates the need for fluid maintenance and reduces the risk of spills. As a high-performance UPS battery, it is capable of delivering the required surge current during power interruptions, protecting your Leadman UPS and connected equipment from outages or instability.

The long-lasting battery design is optimized for float and standby service, helping to extend the usable life and reduce total cost of ownership. With U.L. recognition and CE certification, you can trust that the product meets accepted safety and quality benchmarks. Being brand new and factory fresh ensures reliable out-of-the-box performance, and the included 1 year warranty provides a safety net against manufacturing defects.

  • Durability: Sealed AGM design for reliable, maintenance-free operation.
  • Long life: Constructed to meet OEM SLA specifications for dependable service life.
  • High performance: High rate discharge supports immediate power demand in emergencies.
  • Versatility: Ideal for UPS systems, emergency power applications, and battery-powered tools.

Keep your Leadman UPS functioning at its best — replace its battery with this certified, high-performance SigmasTek unit today. Add to cart now to secure reliable, long-lasting backup power protection.



Payment & Security

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