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SigmasTek  |  SKU: BW-13258

SigmasTek SPG12-55 NB GEL High Performance Replacement Battery

Sale price $241.66 USD Regular price $303.32
Shipping calculated at checkout.

➤ Genuine SigmasTek SPG12-55(NB) GEL battery with pure gel technology for superior performance

➤ Durable ABS (UL94 V-0) case ensures safety and long-lasting use

➤ Low self-discharge rate of less than 2% per month for extended standby life

➤ Versatile use in marine, solar, electric wheelchairs, and scooter applications

➤ Factory fresh with 1-year warranty and UL listed for guaranteed 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 | 55 AH

Terminal Type

Nut & Bolt

SigmasTek SPG12-55(NB) GEL Battery — Compatible with SPG12-55(NB)

Upgrade your power system with the genuine SigmasTek SPG12-55(NB) GEL battery — a purpose-built, reliable replacement battery designed for deep cycle and standby use. This high-performance battery delivers consistent output for demanding applications such as marine systems, solar arrays, mobility devices, and emergency backup. Built with Pure Gel Technology and rugged ABS housing, the SPG12-55(NB) provides stable performance, low self-discharge, and dependable operation even in challenging conditions.

Key Specifications

  • Model: SPG12-55(NB)
  • Voltage: 12 Volts
  • Capacity: 55 AH
  • Battery Type: GEL (Pure Gel Technology, not hybrid gel)
  • Case Material: ABS (UL94 V-0)
  • Terminal Type: Nut & Bolt
  • Self-discharge Rate: Less than 2% per month
  • Expected Life: 3 - 5 years in standby use
  • Orientation: Can be operated in any orientation
  • Storage: Can be stored up to 9 months at 25°C (77°F) before a freshening charge is recommended
  • Condition: Brand New and Factory Fresh
  • Warranty: 1 Year Warranty
  • Certifications: UL Listed
  • Intended Use: Cycle and Standby applications
  • Applications: Marine, Solar, Electric Wheelchairs, Scooters

Benefits

  • Durability: Pure Gel construction and a UL94 V-0 ABS case deliver enhanced resistance to vibration, corrosion, and environmental stress for long service life.
  • Long Life: Low self-discharge (under 2% per month) and 3–5 years expected standby life make this a true long-lasting battery for backup power and seasonal equipment.
  • High Performance: Designed for deep cycle and standby applications, the SPG12-55(NB) offers reliable discharge and recharge performance for high-demand systems.
  • Flexibility: Operable in any orientation and suitable for both cycle and standby use, it fits a wide variety of installations without special mounting considerations.
  • Safe and Leak-Free: Gel technology provides a spill-proof, maintenance-free solution ideal for enclosed battery compartments in marine or mobility equipment.
  • Typical Applications: Ideal as a replacement battery for marine power systems, solar charge storage, electric wheelchairs and scooters, UPS and emergency power systems, and other deep-cycle uses.
  • Confidence & Support: Factory fresh unit with UL listing and a one-year warranty ensures dependable service and peace of mind.

This SigmasTek SPG12-55(NB) GEL replacement battery is an excellent choice if you need a high-performance battery that’s durable, reliable, and long-lasting. Order now to secure fast shipping and dependable power for your equipment.


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