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SigmasTek  |  SKU: BW-8557

Ortho-Kinetics Lark High Performance Replacement Battery Set

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

➤ Includes 2 high-performance 12V 35AH replacement batteries

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

➤ Guaranteed compatibility with original Ortho-Kinetics Lark batteries

➤ Wide operating temperature range ensures reliable wheelchair power

➤ 1-year warranty for peace of mind and quality 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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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

Ortho-Kinetics Lark Replacement Batteries — Compatible with Ortho-Kinetics Lark

Keep your Ortho-Kinetics Lark wheelchair running reliably with this set of two replacement batteries engineered for compatibility, performance, and reliability. These 12V 35AH batteries with NB (nut & bolt) terminals are designed as a direct replacement to restore mobility and confidence. As a high-performance battery option, they deliver the dependable power you need for daily use and are built to be a long-lasting battery solution for your mobility device.

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 Ortho-Kinetics Lark replacement battery packs offer robust construction and high-discharge performance to meet the demanding needs of mobility applications. Built using AGM technology and sealed lead-acid (SLA) chemistry, they are maintenance-free and spill-proof, providing safe, worry-free operation in a wheelchair environment. The units are optimized for long life and reliable output, making them an excellent long-lasting battery choice for everyday mobility.

Durability: The rugged construction and AGM design resist vibration and shocks commonly encountered in wheelchair use, extending service life and maintaining steady performance over time.

High Performance: Designed with a high-discharge profile, these batteries supply the necessary current for motors and electronics without excessive voltage sag, ensuring responsive operation and better runtime.

Typical Applications: While purpose-built for the Ortho-Kinetics Lark, this high-performance battery set is also suitable in similar 12V 35AH wheelchair systems and can serve as reliable power for UPS, emergency power systems, mobility scooters, and other portable power tools where a sealed, maintenance-free battery is required.

Installation and Compatibility: Install the new batteries in the same configuration as the originals and reuse your existing cables. Always check your current battery dimensions before purchasing, as manufacturers may change specifications without notice. These replacement batteries meet or exceed original manufacturer specifications for quality and durability.

Ready to restore dependable power to your Ortho-Kinetics Lark? Order this set of two replacement batteries now and enjoy fast shipping and a 1-year warranty — a dependable, high-performance battery solution for continued mobility.


Payment & Security

Payment methods

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  • Diners Club
  • Discover
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  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

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