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SigmasTek  |  SKU: BW-9198

Balder Junior High Performance Wheelchair Replacement Battery

Sale price $313.99 USD Regular price $480.28
Shipping calculated at checkout.

➤ Factory fresh replacement batteries for Balder Junior wheelchair

➤ 100% compatible with Balder Junior units, requires existing cables

➤ AGM technology for deep cycle use and spill-proof design

➤ High energy density with U.L. recognized and CE certified safety

➤ Includes 1 year warranty for reliable performance and 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 | 55 AH

Terminal Type

Nut & Bolt

Replacement Balder Junior Battery — Compatible with Balder Junior (SP12-55 NB)

Get back on the move with a replacement battery that pairs exact compatibility with dependable output. The replacement Balder Junior batteries are factory fresh and 100% compatible with your Balder Junior unit, delivering the reliable performance you expect from a high-performance battery. Built for deep-cycle wheelchair operation, the SP12-55 NB restores run-time and delivers consistent power for daily mobility needs.

Key Specifications

  • Model: SP12-55 NB
  • Voltage: 12 Volts
  • Capacity: 55 AH
  • Terminal Type: Nut & Bolt
  • Brand: SigmasTek
  • Quantity Required: 2 batteries
  • Battery Type: Absorbent Glass Mat (AGM) Technology
  • Designed For: Deep Cycle Usage
  • Construction: Valve Regulated Spill Proof
  • Energy Profile: Power/Volume Ratio Yielding Unrivaled Energy Density
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Performance: Performance Guaranteed
  • Warranty: 1 Year Warranty

Benefits

  • Durability: Advanced AGM construction resists leaks and vibration for rugged, maintenance-free use in mobility equipment.
  • Long Life: Optimized for deep cycle applications, this long-lasting battery provides dependable capacity and many recharge cycles for everyday mobility.
  • High Performance: The SP12-55 NB offers high energy density and consistent discharge characteristics, making it a high-performance battery solution for power chairs and scooters.
  • Safety: Valve regulated, spill-proof design with U.L. Recognition and CE Certification ensures safe operation inside enclosed mobility compartments.
  • Versatile Use: Perfect for Electric Wheelchairs, Power Chairs, Mobility Chairs and Mobility Scooters; also suitable for compact UPS systems, emergency power applications, and portable tool power where a 12V deep-cycle source is needed.
  • Simple Replacement: Swap into your Balder Junior using existing cables and mounting hardware for quick installation without modification.
  • Warranty & Support: Each battery is brand new, performance guaranteed, and covered by a 1 year warranty to protect your investment and provide peace of mind.

Buy your replacement Balder Junior battery (SP12-55 NB) today to enjoy restored runtime and reliable performance. Need help? Call our customer service at (800) 657-1303. Order now to secure a long-lasting, high-performance battery that’s ready to go.


Payment & Security

Payment methods

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