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SigmasTek  |  SKU: BW-10729

CTM HS-235 High Performance Wheelchair Replacement Battery

Sale price $60.16 USD Regular price $78.77
Shipping calculated at checkout.

➤ Compact size: 5.95" length x 3.86" width x 3.7" height

➤ Reliable 12 Volt power output for consistent performance

➤ 12 Ah capacity ensures longer usage between charges

➤ Lightweight design at 14.5 lbs for easy handling

➤ F2 terminal type for secure and compatible connections


📦🚀 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 | 12 Ah

Terminal Type

F2

SigmasTek 12V 12Ah F2 Replacement Battery — Compatible with CTM Wheelchairs

Restore mobility and dependable runtime with the SigmasTek 12V 12Ah F2 replacement battery, designed to be fully compatible with CTM wheelchair models and similar mobility devices. This replacement battery focuses on consistent output, safe connections, and a balance of runtime and compact sizing to meet everyday mobility needs. If you’re searching for a long-lasting battery that returns your device to reliable operation, this unit is built to perform.

Key Specifications

  • Manufacturer: SigmasTek
  • Brand Replacement: CTM
  • Voltage: 12 Volts
  • Amp Hours: 12 Ah
  • Terminal Type: F2
  • Length (in.): 5.95
  • Width (in.): 3.86
  • Height (in.): 3.7
  • Weight (lb.): 14.50
  • Type: Wheelchair

Benefits

This SigmasTek battery is engineered for durability, offering dependable cycles and consistent voltage for smooth wheelchair motor control. As a high-performance battery, it supports steady current delivery under typical load conditions and helps maintain predictable response during acceleration and climbing. The F2 terminal provides a secure, service-friendly connection for technicians and caregivers performing routine replacements.

Featuring a 12 Ah capacity, this unit offers extended runtime compared to smaller cells, making it a practical long-lasting battery for daily commutes, errands, or extended trips. Its compact footprint fits standard wheelchair battery compartments while the construction withstands typical vibration and handling. Common applications include power wheelchairs, mobility scooters compatible with F2 terminals, emergency backup for small medical accessories, and replacement stock for service departments.

Maintenance is straightforward, and the design reduces downtime—simply swap the pack and get back to full operation. The combination of reliable performance, correct form factor, and secure terminals makes this replacement battery a cost-effective option for restoring mobility and ensuring consistent device availability.

Ready to replace your CTM wheelchair battery? Order the SigmasTek 12V 12Ah F2 replacement battery today to enjoy a high-performance battery that delivers long-lasting power and dependable service.


Payment & Security

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