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SigmasTek  |  SKU: BW-15535

MK Battery ES5-12 High Performance Replacement Battery 3.5 lb

9% off
New arrival
Sale price $29.99 USD Regular price $32.99
Shipping calculated at checkout.
Absorbent Glass Mat (AGM) technology for enhanced performance
Maintenance-free with spill-proof design for safety and convenience
U.L. recognized and CE certified for reliable quality assurance
Brand new and factory fresh for optimal lifespan
Comes with a 1-year warranty for peace of mind
In stock

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Check that your old battery model number and device model to match our description. This makes sure they work together.


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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.

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.


Volts & Amps

12 Volts | 5 AH

Terminal Type

F1

Replacement MK Battery ES5-12 — Compatible with MK Battery ES5-12

Engineered as a direct replacement for the MK Battery ES5-12, this SLA unit delivers dependable, maintenance-free power with proven AGM technology. If you need a reliable spare or a full replacement, this product ensures compatibility, steady performance, and the long-term reliability demanded by critical applications. The construction and certifications reflect a commitment to safety and consistent output for both standby and cyclic use.

Key Specifications

  • Model Compatibility: MK Battery ES5-12
  • Replacement Brand: SigmasTek
  • Chemistry: Rechargeable Sealed Lead Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM)
  • Voltage: 12 Volts
  • Capacity: 5 AH
  • Terminal Type: F1
  • Design: Maintenance-Free, Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

This high-performance battery is built for durability and dependable service life. The AGM technology ensures superior charge acceptance and low self-discharge, making it a long-lasting battery choice for standby and cyclic jobs alike. Spill-proof and maintenance-free, this replacement removes the need for routine fluid checks and allows safe installation in a variety of equipment housings.

Ideal applications include UPS systems, emergency power supplies, security and alarm systems, portable medical devices, and smaller tools that rely on SLA technology. The 12-volt, 5 AH specification is a versatile combination that supports both short bursts of high current and steady standby reserves. With U.L. and CE recognition, you get certified safety alongside performance.

As a brand-new, factory-fresh replacement backed by a 1 year warranty, the SigmasTek ES5-12 alternative offers immediate peace of mind and a cost-effective path to restoring device reliability. It’s a smart option when you need a replacement battery that matches OEM expectations without a premium price tag.

Ready to upgrade your backup power? Add the MK Battery ES5-12 replacement battery to your cart now and enjoy long-lasting, high-performance power for your equipment.

Technical Specifications

Voltage12 Volts
Amp Hours5 AH
Terminal TypeF1
Length (in.)3.54
Width (in.)2.76
Height (in.)3.98
Weight (lb.)3.5

Product Highlights

  • Brand Replacement : MK Battery ES5-12
  • Manufacturer: SigmasTek
  • Product Type: SLA Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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