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SigmasTek  |  SKU: BW-6386

Altronix MAXIM77D High Performance Alarm Replacement Battery Set

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

➤ Reliable 12V power supply for various devices

➤ 12 Ah capacity ensures long-lasting performance

➤ Compact design fits easily in tight spaces

➤ Durable construction for extended battery life

➤ Ideal for backup power and portable electronics


📦🚀 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 | 12 Ah

Terminal Type

F2

SigmasTek 12 Volts 12 Ah F2 Replacement Battery — Compatible with SigmasTek Models

Replace worn-out power packs with a SigmasTek 12 Volts 12 Ah F2 replacement battery designed for reliable service and consistent output. This high-performance battery provides the steady power delivery required by many low-voltage systems while offering the peace of mind of SigmasTek manufacturing. If you are searching for a long-lasting battery solution that’s easy to install and maintains system uptime, this 12 Volts 12 Ah F2 SigmasTek model is engineered to meet those needs.

Key Specifications

  • Voltage: 12 Volts
  • Amp Hours: 12 Ah
  • Terminal Type: F2
  • Manufacturer: SigmasTek

Benefits

  • Robust Construction: Built for steady performance and dependable service life, this replacement battery stands up to repeated cycling and standby duties.
  • Extended Runtime: As a long-lasting battery option, it helps ensure your systems remain operational longer between replacements.
  • Consistent Output: A high-performance battery that maintains voltage under load, making it a reliable choice for alarm panels, access control, and other critical gear.
  • Versatile Use Cases: Ideal for UPS backups, emergency power systems, security alarm setups, and portable equipment where 12V/12Ah is required.
  • Simple Installation: F2 terminal configuration simplifies a direct swap into existing mounts and connectors for quick service restores.
  • Reliable Brand Standard: Manufactured by SigmasTek to fulfill quality expectations for replacement power modules.

Restore reliable power to your equipment with this SigmasTek 12 Volts 12 Ah F2 replacement battery. Order now to secure a dependable, long-lasting battery that keeps your critical systems running.


Payment & Security

Payment methods

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