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SigmasTek  |  SKU: BW-8560

Merits Pioneer 3 S1312 High Performance Replacement Battery Set

Sale price $214.25 USD Regular price $280.53
Shipping calculated at checkout.

➤ Includes 2 high-performance 12V 35AH batteries with NB terminals

➤ Maintenance-free, spill-proof AGM technology for safety and reliability

➤ Wide operating temperature range ensures consistent performance

➤ Guaranteed compatibility with original Merits Pioneer 3 S1312 batteries

➤ Backed by a 1-year warranty for quality and durability assurance


📦🚀 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

Merits Pioneer 3 S1312 Replacement Batteries — Compatible with Merits Pioneer 3 S1312

Get reliable power for your Merits Pioneer 3 S1312 wheelchair with this pair of replacement 12V 35AH batteries equipped with NB (nut & bolt) terminals. These replacement batteries are built to provide high-performance delivery and the long-lasting battery life you need to stay mobile and independent.

Key Specifications

  • Volts: 12
  • Amps: 35 (35 AH)
  • Weight: 49.4Lbs
  • Length: 7.72
  • Width: 5.14
  • Height: 6.14
  • Terminal: NB (Nut & Bolt)
  • Package contains: 2 batteries
  • Maintenance-free
  • Spill Proof
  • SLA Chemistry
  • AGM Technology
  • Guaranteed compatibility with original batteries
  • 1-year Warranty (SigmasTek)
  • Shipping Methods: UPS Ground and USPS
  • We ship in 1 business day for all in-stock items

Benefits

These Merits Pioneer 3 S1312 replacement batteries are engineered to deliver stable power and long service life. The AGM and SLA construction make them maintenance-free and spill-proof, ideal for wheelchair applications where safety and reliability matter. As a high-performance battery option, they are designed to withstand high discharge demands and frequent cycling.

Durability: Constructed to handle regular use and the stresses of daily mobility, these batteries provide a durable power source that minimizes downtime and replacement frequency.

High Performance: With a high-discharge design, these batteries support strong motor starts and steady operation to keep your wheelchair responsive and extend usable time between charges.

Typical Applications: Primarily for the Merits Pioneer 3 S1312, these batteries are also well-suited to other 12V 35AH wheelchair systems, UPS backup, emergency power supplies, mobility scooters, and portable power tools that require sealed lead-acid batteries.

Installation Guidance: Replace batteries in the same original configuration and reuse existing cables. Verify dimensions of your current batteries prior to ordering to ensure proper fit, as manufacturing specs can change without notice. These replacement batteries meet or exceed original manufacturer specifications for performance and reliability.

Order your Merits Pioneer 3 S1312 replacement batteries today for prompt shipping and the peace of mind of a 1-year warranty — a dependable, high-performance battery solution to keep you moving.


Payment & Security

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