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300-03866 Replacement Alarm Battery 7.2V 3800mAh NiMH

$39.95 Each
300-03866 Replacement Alarm Battery Specifications
Volts:7.2 V
Capacity:3800 mAh
Chemistry:NiMH
Weight:0.35 lbs
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Replacement for the Ademco 300-03866 alarm battery designed to meet or exceed the original Ademco 300-03866 alarm battery in quality, durability, and performance.

Ships the same day (orders placed before 2pm MST)

Contact us for questions about the 300-03866 alarm battery.

If you are looking for a alarm battery or electronic accessory and can't find it, please feel free to contact us. We are always adding new products to our site, and we would love to help you find it. We always have people, not computers, that answer the phone.

Compatible Products

  • Ademco LYNX-R
  • Honeywell LYNX-R

Compatible OEM Part Numbers

  • 300-03866

Frequently Asked Questions

How long should my alarm battery last?

Most alarm batteries should last 3 to 5 years. Sometimes we have seen alarm batteries last up to ten years, but that's very uncommon.

What do I do with my old batteries?

You can dispose of any batteries at any RBRC affiliated store. The RBRC (Rechargeable Battery Recycling Corporation) has members in every major city in the United States. There is no charge to drop your batteries off there. Home Depot and Radio Shack are two of its predominant members.

How can I use my UPS account number on your website?

Call us and we can put your UPS account number right in the order.

Where can I buy a 300-03866 Alarm Battery?

Battery Universe carries batteries and accessories for most consumer electronics, including the 300-03866 Alarm Battery. You can buy it right here on our website, or call us and we would be happy to take your order over the phone. Please visit us for all of your electronic needs.

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