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SigmasTek  |  SKU: BW-8591

Ortho-Kinetics Lark 3&4 High Performance Replacement Battery Set 49.45 lb

19% off
New arrival
Sale price $245.99 USD Regular price $302.99
Shipping calculated at checkout.
Includes 2 high-performance 12V 35AH replacement batteries
Maintenance-free and spill-proof for hassle-free use
AGM technology ensures long service life and durability
Guaranteed compatibility with Ortho-Kinetics Lark 3&4 original batteries
1-year warranty for reliable quality and peace of mind
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.


Volts & Amps

12 Volts | 35 AH

Terminal Type

Nut & Bolt

Ortho-Kinetics Lark 3 & 4 Replacement Battery (Ortho-Kinetics Lark 3&4)

This replacement battery set is made for the Ortho-Kinetics Lark 3&4 wheelchair, offering reliable compatibility and steady performance. The package includes two 12V 35AH batteries with NB terminals, delivering the dependable power and durability expected from a high-performance battery replacement for mobility devices.

Key Specifications

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

Benefits

These Ortho-Kinetics Lark 3&4 replacement batteries provide long-lasting battery performance with a maintenance-free, spill-proof design that minimizes upkeep. The AGM and SLA technologies ensure stable output and safety while the high discharge configuration supports demanding motor loads common in daily wheelchair use. Expect consistent runtime and extended service life compared to lower-quality alternatives.

In addition to restoring your Lark 3&4 wheelchair’s power, this high-performance battery pair fits a range of applications including UPS backup systems, emergency power solutions, and power tools that require reliable 12V 35AH capacity. Their robust build and wide operating temperature tolerance deliver dependable performance in varied conditions and help reduce battery replacement frequency.

Installation requires placing the batteries in the same original configuration and reusing your existing cables. Be sure to confirm the dimensions of your current batteries before ordering as manufacturer requirements may change without notice. With guaranteed compatibility, a 1-year warranty, and fast shipping, these replacement batteries give you confidence and continuity of power.

Ready to restore reliable power to your Ortho-Kinetics Lark 3&4? Purchase this high-performance, long-lasting battery pair today and get back to dependable mobility.

Technical Specifications

Voltage12 Volts
Amp Hours35 AH
Terminal TypeNut & Bolt
Length (in.)7.72
Width (in.)5.14
Height (in.)6.22
Weight (lb.)49.4

Product Highlights

  • Brand Replacement : Ortho-Kinetics Lark 3&4
  • Manufacturer: SigmasTek
  • Product Type: Medical Equipment Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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