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SigmasTek  |  SKU: BW-4852

Computer Accessories Proxima UPS Compatible Replacement Battery Set

Sale price $165.64 USD Regular price $209.20
Shipping calculated at checkout.

➤ Set of 2 SigmasTek SP12-35 NB batteries (12V, 35AH) for Proxima UPS units

➤ Designed for high rate discharge to support emergency power supply

➤ Spill-proof, valve regulated construction for safe maintenance-free use

➤ Low self-discharge and vibration resistance enhance durability

➤ Factory fresh with U.L. recognized and CE certified quality


📦🚀 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

SigmasTek SP12-35 NB Replacement Battery Set for Computer Accessories Proxima UPS

Restore peak performance to your Computer Accessories Proxima Uninterruptible Power Supply with this reliable, compatible replacement UPS battery set. Engineered to deliver dependable power and consistent runtimes, the SigmasTek SP12-35 NB batteries are a trustworthy choice for anyone seeking a high-performance UPS battery that meets strict OEM-style standards. Expect reliable performance, reduced downtime, and a long-lasting battery solution for your Proxima UPS.

Key Specifications

  • Includes: 2 x SigmasTek SP12-35 NB batteries (battery set of 2)
  • Voltage: 12 Volts
  • Capacity: 35 AH (Amp-hours)
  • Terminal Type: Nut & Bolt
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Features: Low Self-discharge
  • Durability: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Brand: SigmasTek

Benefits

These replacement batteries are constructed to provide long-term reliability and robust performance in demanding UPS applications. The high rate discharge design is particularly effective when brief periods of higher power output are required by the Computer Accessories Proxima UPS, while the valve regulated and spill-proof construction reduces maintenance and improves safety. Low self-discharge preserves stored energy during standby, making this a practical, long-lasting battery for backup scenarios.

High vibration resistance improves service life in environments where movement or mechanical stress could otherwise shorten battery life. With U.L. recognition and CE certification, these batteries meet recognized safety and quality standards. Use this high-performance UPS battery set to protect critical systems such as servers, networking gear, point-of-sale equipment, and emergency power installations. They also work well for battery-powered tools that require reliable short-duration bursts of power.

Please remember to reuse all existing cables and hardware from your original configuration when installing the replacement batteries in your Computer Accessories Proxima. Our technicians test each battery set to ensure they meet or exceed OEM expectations, delivering a dependable and long-lasting battery option for your backup power needs.

Ready to replace your batteries? Purchase this SigmasTek SP12-35 NB replacement UPS battery set for the Computer Accessories Proxima now and enjoy reliable backup power and fast shipping on in-stock items.



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