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SigmasTek  |  SKU: BW-6416

Altronix MAXIM11D High-Performance Alarm Replacement Battery Set

Sale price $116.86 USD Regular price $141.09
Shipping calculated at checkout.

➤ Compatible replacement for Altronix security alarms

➤ Compact dimensions: 5.95" L x 3.86" W x 3.7" H

➤ Reliable 12 Volt power output for consistent performance

➤ High capacity 12 Ah battery for extended usage

➤ Durable F2 terminal type for secure and easy 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 Altronix-Compatible Battery — 12V 12Ah F2 Replacement

Keep your security and backup power systems performing at their best with this SigmasTek replacement battery, tailored for Altronix-compatible equipment. This reliable 12 Volt, 12 Ah battery provides steady power delivery and dependable reserve capacity for alarm panels, access control systems, and emergency backup devices. As a high-performance battery replacement, it emphasizes consistent operation and durability under daily and emergency use.

Key Specifications

  • Manufacturer: SigmasTek
  • Brand Replacement: Altronix
  • Voltage: 12 Volts
  • Amp Hours: 12 Ah
  • Terminal Type: F2
  • Type: Security Alarm
  • Length: 5.95 in.
  • Width: 3.86 in.
  • Height: 3.7 in.
  • Weight: 33.08 lb.

Benefits

  • Durability: Constructed to endure frequent charge cycles and provide stable performance over time, reducing the need for premature replacements.
  • Long Life: With 12 Ah capacity, this long-lasting battery supports extended backup durations for critical systems, delivering peace of mind in power interruptions.
  • High Performance: Engineered for consistent 12 Volt output and efficient recharge, it performs reliably under continuous standby and intermittent load conditions.
  • Wide Use Cases: Perfect for UPS units, security alarm panels, emergency lighting, access control systems, and any application requiring an Altronix replacement battery.
  • Compatibility & Convenience: F2 terminals and compact footprint make installation quick and hassle-free for technicians and installers replacing Altronix batteries.
  • Trusted Backup: Dependable reserve power that helps maintain monitoring, alarms, and life-safety functions when mains power is lost.

Don’t leave your system vulnerable — choose this SigmasTek replacement battery for a high-performance, long-lasting battery solution that fits Altronix-compatible setups. Add to cart now to secure reliable backup power.


Payment & Security

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