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SigmasTek  |  SKU: BW-7746

Encore 52B 450 Lawn Mower Long-Life Replacement Battery

Sale price $102.50 USD Regular price $135.64
Shipping calculated at checkout.

➤ Factory fresh and brand new for reliable performance

➤ 100% compatible with Encore 52B 450 Lawn Mower models

➤ Features Absorbent Glass Mat (AGM) technology for deep cycle use

➤ Valve regulated, spill-proof design ensures safe operation

➤ Backed by a 1-year warranty for peace of mind


📦🚀 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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Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
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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

Encore 52B 450 Lawn Mower Battery (Replacement) - Compatible with Encore 52B 450

Replace your worn-out battery with this factory-new Encore 52B 450 compatible replacement battery engineered for reliable performance and lasting service. This long-lasting battery uses AGM technology combined with valve-regulated, spill-proof construction to offer maintenance-free operation and the dependable power your Encore 52B 450 Lawn Mower requires.

Key Specifications

  • Compatible Model: Encore 52B 450 Lawn Mower
  • Required Battery: SP12-35 NB
  • Voltage: 12 Volts
  • Amp-Hours: 35 AH
  • Terminals: Nut & Bolt
  • Quantity Required: 1
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Usage: Designed For Deep Cycle Usage
  • Construction: Valve Regulated Spill Proof Construction
  • Energy Density: Power/Volume Ratio Yielding Unrivaled Energy Density
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Performance: Performance Guaranteed
  • Application: Encore 52B 450 Lawn Mower Battery (Replacement)

Benefits

This replacement battery combines rugged construction with steady, reliable output for the Encore 52B 450. The sealed AGM design reduces maintenance requirements and provides excellent resistance to vibration and shock typical in lawn mower applications. As a high-performance battery optimized for deep cycle usage, it delivers consistent power across many cycles and resists premature capacity loss, giving you a long-lasting battery solution for everyday mowing and heavier tasks.

The valve-regulated, spill-proof build enhances safety and simplifies installation, while UL recognition and CE certification ensure that the product meets recognized safety and performance standards. The included 1 year warranty plus performance guarantee offers additional assurance for your purchase, while factory-fresh condition ensures you receive a battery ready to deliver full rated capacity from day one.

Beyond use in the Encore 52B 450 Lawn Mower, this 12V 35AH deep cycle format can be applied to small-scale backup or portable power needs where reliable, steady power is required. Typical applications include brief emergency power tasks, small UPS setups, and powering electric tools or accessories that require a dependable 12V supply.

Order this replacement Encore 52B 450 battery now to restore dependable starting and run-time to your mower — secure reliable, long-lasting performance with a high-performance battery you can trust.


Payment & Security

Payment methods

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