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| Volts: | 12 V |
| Capacity: | 45000 mAh |
| Chemistry: | Sealed Lead Acid |
| Length: | 7.75 in |
| Width: | 6.5 in |
| Height: | 6.69 in |
| Weight: | 32.25 lbs |
Replacement for the Sentry A512/40G6 sealed lead acid battery designed to meet or exceed the original Sentry A512/40G6 sealed lead acid battery in quality, durability, and performance.
Ships the same day (orders placed before 2pm MST)
If you are looking for a sealed lead acid 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.
Sealed lead acid batteries are used in tens of thousands of devices. I couldn't answer the question for every device. However, I can answer it in general terms. It all comes down to energy output and design life. Most electronic devices use a battery as a backup device. That is, it is only there for when the power goes out. In that circumstance, the batteries are rarely used, so you should expect 3-5 years of life out of it. For example, your home alarm system has a battery in it to keep your alarm working when the power is out. Out of 365 days, your power is probably out maybe two days a year. So the battery is only being used those two days. The rest of the time its being trickle charged. Because charging a battery causes heat, after years of exposure to steady currents of electricity, the battery will have simply "dried up". Its electrolyte will have evaporated off leaving the battery unable to receive a charge or store the energy. In the case of a device that's main supply of power is batteries, the batteries will wear out much faster. If you are using the battery on a daily basis, it will probably only last a year at the most. Sealed lead acid batteries can only be charged and discharged 300 times at the most, unless you have a pure lead battery with a high input/output rating. Enersys makes some Cyclon batteries that will last longer.
Reverse polarity is when the positive and negative contacts on a battery or device are reversed.
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.
Call us and we can put your UPS account number right in the order.
Battery Universe carries batteries and accessories for most consumer electronics, including the A512/40G6 Sealed Lead Acid 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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