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SigmasTek  |  SKU: BW-1806

12 Volt 35 Amp UPS High Performance Compatible Replacement Battery

Sale price $92.48 USD Regular price $131.02
Shipping calculated at checkout.

➤ High rate discharge design for emergency power supply

➤ Valve regulated spill proof and maintenance-free design

➤ Low self-discharge extends battery life on the shelf

➤ High vibration resistance ensures durability and reliability

➤ Factory fresh and backed by a 1 year warranty


📦🚀 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 | 35 AH

Terminal Type

Nut & Bolt

Replacement UPS12-35 (NB) — Compatible with UPS12-35 (NB)

When you need a dependable replacement UPS battery for UPS12-35 (NB) applications, the replacement UPS12-35 (NB) set delivers reliable performance, fast response during high-rate discharge events, and consistent long-term reliability. Built for high power output over short periods, this high-performance UPS battery is engineered to meet demanding uninterruptible power supply (UPS) needs, emergency power backup, and battery-powered tool usage. Each unit is factory fresh, professionally tested, and certified to provide a long-lasting battery solution you can trust.

Key Specifications

  • Brand: SigmasTek
  • Voltage: 12 Volts
  • Capacity: 35 AH
  • Terminal Type: Nut & Bolt
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated, Spill Proof
  • Self-discharge: Low Self-discharge
  • Vibration Resistance: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

  • Durability: Valve regulated, spill-proof construction and high vibration resistance make this replacement UPS battery resilient in mobile or vibration-prone environments.
  • Long life: Low self-discharge chemistry and factory-fresh condition ensure a long-lasting battery that holds charge in standby and delivers when needed.
  • High performance: Designed for high rate discharge, this high-performance UPS battery supplies the surge power required by UPS systems during critical transitions and short bursts of heavy load.
  • Safety and compliance: U.L. recognition and CE certification provide peace of mind for compliant installations in commercial and residential settings.
  • Typical applications: Ideal for Uninterruptible Power Supply (UPS) units, emergency power supply systems, and battery-powered tools that require reliable, short-duration high current output.
  • Tested quality: Each battery is personally tested to meet or exceed OEM specifications, so you receive consistent performance out of the box.

This replacement UPS12-35 (NB) is the perfect choice when you need a high-performance UPS battery and a long-lasting battery solution that fits UPS12-35 (NB) systems. Buy your replacement UPS battery today with confidence — orders for in-stock items typically ship within 24 hours.


Payment & Security

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