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SigmasTek  |  SKU: BW-14133

AJC C42S F2 High Performance Replacement Battery

Sale price $90.04 USD Regular price $109.03
Shipping calculated at checkout.

➤ Absorbent Glass Mat (AGM) technology for enhanced performance

➤ Maintenance-free design with spill-proof construction

➤ U.L. Recognized and CE Certified for safety and reliability

➤ Brand new and factory fresh for optimal longevity

➤ 1 year warranty ensures 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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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

6 Volts | 36 Ah

Terminal Type

F2

AJC C42S F2 Replacement Battery — Compatible with AJC C42S F2

This replacement battery for the AJC C42S F2 delivers dependable compatibility, strong performance, and proven reliability for your devices. Built as a rechargeable Sealed Lead Acid (SLA) battery using Absorbent Glass Mat (AGM) technology, this high-quality unit is designed to meet or exceed OEM SLA battery specifications so you can trust it as a direct swap for the AJC C42S F2. If you are searching for a replacement battery that combines high-performance battery characteristics with maintenance-free reliability, this 6 Volt, 36 Ah model is engineered to keep critical systems running when you need them most.

Key Specifications

  • Model Compatibility: AJC C42S F2
  • Battery Type: Rechargeable Sealed Lead Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM)
  • Voltage: 6 Volts
  • Capacity: 36 Ah
  • Terminal Type: F2
  • Brand: SigmasTek
  • Certifications: U.L. Recognized and CE Certified
  • Design: Maintenance-Free with Spill Proof Construction
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year

Benefits

Choosing this AJC C42S F2 replacement battery gives you a long-lasting battery solution that stands up to daily demands and emergency events. The AGM construction provides superior vibration resistance and low internal resistance for reliable power delivery, making it a high-performance battery ideal for both standby and cyclic applications. Because it is maintenance-free and spill-proof, installation is simple and safe—no watering or complex upkeep required.

Durability is built into the design: the sealed construction and factory-fresh manufacturing ensure steady performance over the lifetime of the battery. Typical applications include UPS systems, emergency lighting, security systems, alarm panels, mobility devices, and other critical backup power installations where dependable reserve capacity matters. Whether used for primary power or as a backup, this replacement battery supports extended run-times and dependable recharge cycles.

When you need a high-performance battery that’s also a cost-effective replacement battery option for the AJC C42S F2, this SigmasTek unit offers reliable power and a one-year warranty for added peace of mind. It’s a long-lasting battery engineered for real-world demands.

Ready to restore reliable power? Purchase this AJC C42S F2 replacement battery now and benefit from fast shipping and confident compatibility.


Payment & Security

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