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SigmasTek  |  SKU: BW-15788

12V 35Ah Deep Cycle Compatible Replacement Battery

Sale price $119.46 USD Regular price $137.18
Shipping calculated at checkout.

➤ Meets or exceeds OEM SLA battery specifications for reliable performance

➤ Brand new, factory fresh, and high quality for long-lasting use

➤ Includes minimum one year warranty and UL listed for safety assurance

➤ Maintenance-free, non-spillable sealed lead acid design for easy use

➤ Versatile applications including emergency lighting, alarms, and medical equipment


📦🚀 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

12 Volt 35 Amp Deep Cycle Battery — Compatible with OEM SLA

This 12 Volt 35 Amp Deep Cycle battery is a reliable, high-quality replacement battery engineered to meet or exceed OEM SLA battery specifications. Designed for compatibility, consistent performance, and dependable standby power, this high-performance battery delivers maintenance-free operation and the assurance of factory-fresh construction. Whether you need a long-lasting battery for emergency systems or a dependable power source for electronics, this deep cycle option provides the durability and performance you expect.

Key Specifications

  • Voltage: 12 Volt
  • Capacity: 35 Amp (35 AH indicated in product line)
  • Battery Type: Sealed Lead Acid (SLA), Deep Cycle
  • Design: Maintenance-free, Non-spillable
  • Orientation: Can operate in any orientation
  • Certifications: UL listed
  • Warranty: Minimum one year warranty
  • Condition: Brand new, Factory fresh
  • Terminal Type: Nut & Bolt
  • Estimated Standby Life Expectancy: 3-5 years (standby use)
  • Branding Info: Supplied as high quality replacement (SigmasTek reference in product line)

Benefits

Built to deliver consistent power and longevity, this long-lasting battery is an ideal choice for both cycle and standby applications. The absorbent, sealed design means maintenance-free use—no topping up or electrolyte handling—reducing upkeep and downtime. As a high-performance battery, it offers strong cycle life for repeated discharge/recharge scenarios and dependable standby protection when systems demand immediate power.

Durability is engineered into every cell: the non-spillable construction and robust case provide safe operation even in varied mounting orientations. The included UL listing and factory-fresh quality ensure you receive a tested, dependable replacement battery ready for immediate installation.

Typical applications where this battery excels include emergency lighting, security and fire alarm systems, UPS and backup power systems, medical monitoring equipment, consumer electronics, garden and home power devices, and other critical or portable power needs. For technicians and facilities managers needing a proven, easy-to-install solution, this deep cycle battery is an excellent match.

Choose this high-performance, long-lasting replacement battery with confidence. Buy now to secure reliable power backed by a one year warranty and fast shipping—get the dependable spare or upgrade your system today.


Payment & Security

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