Everest & Jennings MX Wheelchair High-Performance Replacement Battery
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⚠️ 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 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
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
⚠️ 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 Everest & Jennings MX Battery - SP12-55 NB (12 V 55 AH)
Restore performance to your Everest & Jennings MX with this factory-fresh replacement battery engineered for consistent, reliable operation. This high-performance battery is 100% compatible with the Everest & Jennings MX unit and provides the deep-cycle energy required for daily mobility. Use your existing cables and hardware to install these units quickly and safely, ensuring your power chair or scooter is back in service with a long-lasting battery solution.
Key Specifications
- Compatible Model: Everest & Jennings MX
- Battery Model: SP12-55 NB
- Voltage: 12 Volts
- Amp-Hours: 55 AH
- Quantity Required: 2 batteries per wheelchair
- Technology: Absorbent Glass Mat (AGM) Technology
- Designed For: Deep Cycle Usage
- Construction: Valve Regulated Spill Proof
- 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
- Brand: SigmasTek
- Terminal Type: Nut & Bolt (NB)
- Performance Guarantee: Performance Guaranteed
Benefits
- Durability: AGM construction and valve-regulated design deliver rugged, maintenance-free performance in everyday mobility situations.
- Long Life: Built for deep-cycle use to extend service life and reduce the need for frequent replacements—this is a true long-lasting battery option.
- High Performance: Reliable voltage delivery and superior energy density ensure strong torque and runtime for power chairs and scooters.
- Safety & Standards: U.L. recognition and CE certification ensure compliance with key safety standards for mobility and transport applications.
- Simple Replacement: Designed to work with your original cables and hardware so installation is straightforward and hassle-free.
- Multi-use: Ideal for electric wheelchairs, power chairs, mobility chairs, mobility scooters, and applicable for backup power systems such as UPS, emergency power, or light tools when sealed AGM batteries are suitable.
- Confidence: Supplied brand new with a 1 year warranty and performance guarantee for dependable everyday use.
Choose this replacement battery for your Everest & Jennings MX to regain reliable mobility and extended runtime. Buy now to secure a high-performance battery and long-lasting battery life—fast shipping and excellent customer support make it easy to replace your batteries today.
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