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All-in-one Contec Ecg-300g Ecg300gt Medical Replacement Battery Deal Alert: 80% Off [4M20dVjx]

$17.99 $57.99 -69%

INFOThis is a replacement compatible with a Contec Medical BatteryVolts: 7.4V (7.4 Volts)Capacity: 3800mAh (3.8Ah)Type: Li-PolymerColor: BlueContec ECG-300G ECG300GT Replacement Batteries.Mfgr Part # 874225Dimensions: 3.03 in. L x 2.25 in. W x 0.67 H

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All-in-one Contec Ecg-300g Ecg300gt Medical Replacement Battery Deal Alert: 80% Off [4M20dVjx]

INFO
  • This is a replacement compatible with a Contec Medical Battery
  • Volts: 7.4V (7.4 Volts)
  • Capacity: 3800mAh (3.8Ah)
  • Type: Li-Polymer
  • Color: Blue
  • Contec ECG-300G ECG300GT Replacement Batteries.
  • Mfgr Part # 874225
  • Dimensions: 3.03 in. L x 2.25 in. W x 0.67 H in.
  • Weight: 0.5 lb
  • Warranty: 1 Year

Disclaimer: Our products are not affiliated with or authorized by Contec.

FAQs
  • What is the best replacement battery for the Contec ECG-300G ECG300GT Medical Battery?

    The CS-CMS300MD is the best replacement battery for the Contec ECG-300G ECG300GT Medical Battery.


  • What is your return policy and battery warranty?

    Our batteries are backed by easy 30-day returns and a 12-month warranty.


  • How do I find the best replacement Battery?

    Our search tool at the top of the website should give you the best results. Search by brand or part number to see if we have the right match for you.


  • What does Li-ion and Ni-MH mean?

    They represent different types of rechargeable batteries. Li-ion stands for Lithium Ion, lithium ions move from the negative electrode through an electrolyte to the positive electrode during discharge and back when charging. Ni-MH stands for nickel-metal hydride where the negative electrode is made from a hydrogen-absorbing alloy.


  • Do you have a wholesale, reseller and large volume purchase program?

    Yes, our bulk purchasing program saves you money and allow you to obtain the batteries you need in one easy, hassle-free transaction. Apply here.


What Our Customers Say

January 27, 2026

Absolutely no complaints!

An outstanding item. It is very, very, very reliable.

- Catrin A..

January 27, 2026

Absolutely no complaints!

This is a very sturdy, highly and impressive device.

- Maredudd N..

January 27, 2026

Absolutely no complaints!

An awesome purchase. Would recommend to all.

- Padrig S..

Write a Review

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