Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com

WELCOME5
SigmasTek  |  SKU: BW-13293

MK 8GU1 GEL Compatible Replacement Battery 23.61 lb

18% off
Sale price $130.99 USD Regular price $158.99
Shipping calculated at checkout.
Pure Gel Technology ensures reliable deep cycle performance
Durable ABS (UL94 V-0) case for enhanced safety and protection
Low self-discharge rate of less than 2% per month for longer standby life
Versatile use in marine, solar, electric wheelchairs, and scooters
1 year warranty with UL listing for guaranteed quality and peace of mind
In stock

— Ready to ship immediately

Free shipping

Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe

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


We ship your order same day if you buy it before 4 PM EST.

Send Your Battery Photo

Expert Technician Help

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.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

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 | 35 AH

Terminal Type

Nut & Bolt

MK Battery 8GU1 GEL Battery (Replacement) - Compatible with MK Battery 8GU1

The MK Battery 8GU1 GEL replacement battery delivers reliable compatibility, steady performance, and proven reliability for a wide variety of deep cycle applications. This replacement battery uses Pure Gel Technology to provide consistent discharge characteristics, low self-discharge, and dependable standby operation—making it a high-performance battery choice for solar arrays, marine systems, mobility devices, and other demanding environments. If you need a long-lasting battery that matches or exceeds OEM GEL specifications for the MK Battery 8GU1 model, this GEL replacement offers factory-fresh condition and UL listing for added peace of mind.

Key Specifications

  • Model: MK Battery 8GU1 (Replacement)
  • Battery Type: Pure Gel Technology (Not to Be Mistaken with Hybrid Gel)
  • Voltage: 12 Volts
  • Capacity: 35 AH
  • Case Material: ABS (UL94 V-0) Case
  • Self-discharge Rate: Less than 2% per month
  • Expected Life (Standby Use): 3 - 5 years
  • Orientation: Can be operated in any orientation
  • Storage: Up to 9 months at 25°C (77°F) before a freshening charge is recommended
  • Terminal Type: Nut & Bolt
  • Condition: Brand New and Factory Fresh
  • Warranty: 1 Year Warranty
  • Certifications: UL Listed

Benefits

  • Durability and long life: The Pure Gel Technology and UL94 V-0 ABS case provide a rugged, non-spillable construction that stands up to vibration and vibration-prone environments such as marine and mobility applications.
  • Reliable standby performance: With a self-discharge rate of less than 2% per month and an expected 3–5 year life in standby service, this replacement battery keeps backup systems ready when you need them.
  • High-performance battery behavior: Gel chemistry delivers stable output under deep cycle and float conditions—ideal where both cycle and standby use are required.
  • Versatile applications: Commonly used in marine applications, solar systems, electric wheelchairs, and scooters, and also well suited for UPS systems, emergency power solutions, and hand tools that require a dependable long-lasting battery source.
  • Safe storage and handling: Long shelf life at 25°C and the ability to operate in any position simplify installation, storage, and replacement for technicians and end users.

Ready to replace your worn battery? Choose this MK Battery 8GU1 replacement battery for proven GEL performance, dependable standby life, and peace of mind backed by UL listing and a one-year warranty. Order your high-performance replacement battery today and enjoy fast shipping and reliable service.

Technical Specifications

Voltage12 Volts
Amp Hours35 AH
Terminal TypeNut & Bolt
Length (in.)7.68
Width (in.)5.12
Height (in.)6.46
Weight (lb.)23.59

Product Highlights

  • Brand Replacement : MK Battery 8GU1
  • Manufacturer: SigmasTek
  • Product Type: Heavy Duty Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.