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SigmasTek  |  SKU: BW-5632

UPG UPG-45976 12V 35Ah Solar AGM SLA Compatible Replacement Battery

Sale price $100.19 USD Regular price $123.31
Shipping calculated at checkout.

➤ Uses advanced Absorbent Glass Mat (AGM) technology for reliable power

➤ Maintenance-free, sealed design prevents leaks and requires no upkeep

➤ Flame-resistant ABS case ensures safety and durability

➤ Can be mounted in any position and resists shocks and vibrations

➤ Includes 1-year warranty and is UL recognized and CE certified


📦🚀 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

Internal Thread*

UPG UPG-45976 Solar AGM SLA Battery 12V 35AmpH (Compatible Replacement)

This UPG UPG-45976 compatible replacement battery delivers dependable compatibility, consistent performance, and proven reliability for solar and standby systems. Built with Absorbent Glass Mat (AGM) technology and a sealed, valve-regulated design, this 12 Volt, 35 AmpH unit is a maintenance-free solution engineered for both cycle and standby applications. As a high-performance battery option, it offers leak-free operation in any orientation and strong resistance to shocks and vibration — making it a confident choice whether you need a replacement battery for renewable energy setups, mobility equipment, or marine electronics.

Key Specifications

  • Brand / Model: UPG UPG-45976 (compatible replacement)
  • Voltage: 12 Volts
  • Capacity: 35 AmpH
  • Battery Type: Absorbent Glass Mat (AGM) SLA
  • Design: Sealed, valve-regulated; maintenance-free
  • Case Material: ABS (UL94 V-0) Flame Resistant Case
  • Expected Life (Standby Use): 3 - 5 years
  • Mounting: Can be mounted in any position
  • Durability: Resists shocks and vibration
  • Condition: Brand New and Factory Fresh
  • Warranty: 1 Year Warranty
  • Certifications: U.L. Recognized and CE Certified
  • Storage Guidelines: Can be stored up to 9 months at 25°C (77°F) before a freshening charge is recommended
  • Terminal Type: Internal Thread*
  • Shipping: In-stock items typically ship within 24 hours

Benefits

  • Durable Construction: The ABS (UL94 V-0) flame resistant case and sealed AGM design deliver rugged protection against harsh conditions, helping this replacement battery withstand daily use in demanding environments.
  • Long Life & Reliability: With an expected 3–5 year life in standby use and factory-fresh condition, this long-lasting battery is designed for dependable backup power and repeatable deep-cycle performance.
  • High Performance: AGM technology provides low internal resistance, efficient charge acceptance, and stable output — ideal when you need a high-performance battery to support sensitive electronics or renewable energy systems.
  • Versatile Application: Commonly used in solar arrays, marine systems, electric wheelchairs, and scooters, this battery is also suitable for UPS systems, emergency power supplies, and handheld or stationary tools that require steady 12V power.
  • Maintenance-Free Convenience: The sealed, valve-regulated design eliminates watering and reduces routine maintenance, while allowing installation in upright or non-upright orientations.
  • Safety & Certification: U.L. Recognition and CE certification add confidence when deploying this battery in residential and commercial settings.

Choose this UPG UPG-45976 replacement battery for a reliable, high-performance battery solution that balances durability and long run-life. With factory-fresh quality, a 1 Year Warranty, and fast shipping on in-stock items, now is the time to replace failing power sources. Order your long-lasting battery today and restore dependable power to your system.


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