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C&D Dynasty UPS12-300MR High Rate Replacement Battery

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Product Description

Specifications for the C&D Dynasty UPS12-300MR Replacement Battery By SigmasTek:

Volts: Amp Hours: Terminal: Length (in): Width (in): Height (in): Weight (Lbs): Chemistry:
12 83 IT 10.2 6.61 8.19 54.8 Sealed Lead Acid (AGM) carries both OEM C&D Dynasty UPS12-300MR Batteries and a High Quality Replacements - SigmasTek SPX12-300FR. Please choose the battery you would like to purchase from the section above. If you need any help, please contact us via e-mail at, call us TOLL FREE at (800) 650-1708, or use the Live Chat at the lower right corner.

Specsheets for the OEM and the Replacement C&D Dynasty UPS12-300MR Battery:


C&D Dynasty UPS12-300MR Battery:

C&D Dynasty UPS12-300MR is a battery replacement from the C&D Dynasty High Rate Max series - SPX12-300FR IT. It is designed to provide the constant power backup that UPS systems require and assure that your business systems run uninterrupted. The C&D Dynasty UPS12-300MR battery replacement is a perfect fit for UPS applications such as:

  • Data Centers
  • Network Operations Centers
  • Industrial Process Control Facilities
  • Internet Housing Sites
  • Semiconductor Manufacture
  • Banks & Financial Markets


Features and Benefits of the C&D Dynasty UPS12-300MR Battery Replacement :

  • 10 year Design Life @ 25°C
  • Absorbent Glass Mat (AGM) technology for efficient gas recombination of over 99%
  • Patented Long Life Alloy having the lowest calcium levels in the industry minimizing grid growth, reducing gassing, and extending battery life
  • Flame arresting, one-way pressure-relief vent for safety and long life
  • UL Recognized
  • Flame retardant polypropylene case and covers
  • Thermally welded case-to-cover bond to eliminate leakage


The C&D Dynasty UPS12-300MR replacement battery is a 12V 83AH SigmasTek SPX12-300FR high rate discharge battery with IT terminal. Our C&D Dynasty UPS12-300MR replacement batteries are 100% compatible with your current UPS12-300MR battery, and have 325 Watts per Cell on 15-min rate at 1.67 Volts.

The C&D Dynasty UPS12-300MR replacement battery has a self-discharge rate of less than 3% per month and an expected life of up to 10 years in standby use. The C&D Dynasty UPS12-300MR battery replacement can be used for 300 complete discharge cycles and comes with a 3 Year Warranty

Features and Benefits of the Replacement C&D Dynasty UPS12-300MR Battery By SigmasTek :

  • Absorbent Glass Mat Technology
  • ABS (UL94 V-0) flame retardant case
  • Brand New, Factory Fresh
  • Spill Proof Construction
  • 3 Year Warranty
  • UL Recognized


You can also see our warranty, shipping & return policy:

Warranty Policy
Shipping & Return policy

If you have any questions or would like more information about the C&D Dynasty UPS12-300MR replacement battery, or any other products or services, offered by, please contact us via e-mail, or call us TOLL FREE at (800) 650-1708. Our Customer Service Representatives are here to assist you.

We offer quantity discounts on all our products. Request a quote today and save up to 30%!

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Warranty Information

The C&D Dynasty UPS12-300MR replacement batteries come with a 3 year warranty. If the received product fails to perform during that period, please contact us either by calling (800) 650-1708 or via email. We will then provide you with a warranty claim form, which you will need to fill out and send back along with pictures of voltage meter readings. Should you need further assistance, please do not hesitate to contact us!

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