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SEALED LEAD ACID BATTERY (AGM) BY BRANDS
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| SEALED LEAD ACID BATTERIES BY VOLTAGE |
| SEALED LEAD ACID BATTERIES BY CAPACITY |
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Sealed Lead Acid Battery (AGM)Sealed Lead Acid Batteries come in a variety of voltages and capacities. AtBatt.com offers sealed lead acid batteries from Power-Sonic, Yuasa (Genesis) by Enersys, Hawker, Ritar and Amstron. Please use our Battery Select Technology™ tool to find the correct SLA battery that meets your voltage and capacity needs. If you have any questions, feel free to call us toll free at 1-877-528-2288. |
FEATURED BRANDS
Differences in Battery Types
General SLA - are designed to be a general purpose battery that can be used in a wide variety of applications such as toys, consumer level UPS, alarm systems, etc. General SLA batteries can provide a large discharge current over a short time period and the life cycle of the battery is 1-3 years depending on use. Capacity is usually calculated at 20HR. These batteries generally have regular sized plates.
Deep Cycle (EV) – are designed to provide a steady amount of current over a long period of time and are able to drain completely and recover to almost 100%. These batteries are designed for electric vehicles, golf carts, wheelchairs, etc. Typical life cycle is 2 years or less depending on depth and frequency of discharge. These batteries generally have thick plates.
High Rate Discharge - are designed for when a large amount of amps are required in a very short amount of time. These batteries are used primarily where high power is required for a short duration of time (less than 30 minutes). Mainly for high powered UPS applications. Capacity is usually calculated at 10HR or lower. These batteries generally have thinner, but more numerous plates.
Long Life – are constructed to have long service life in float or cyclic applications. Life expectancy in float service is up to 18 years @ 25C (typically 10+ years). Typical applications are communication, stand-by power, security systems, power systems, etc.
GEL vs. (AGM) Sealed Lead Acid Batteries
AGM (absorbed glass mat) is a specially designed glass mat made to wick the battery electrolyte between the battery plates. AGM Batteries contain only enough liquid to keep the mat wet with the electrolyte and if the battery is broken no free liquid is available to leak out.
Gel Cell batteries contain a silica type gel in which the battery electrolyte is suspended. This thick paste-like material allows electrons to flow between plates but will not leak from the battery if the case is broken.
More often than not, AGM batteries are mistakenly identified as Gel Cell Batteries. Both batteries have similar traits such as being non-spillable, able to be mounted in any position, low self-discharge, safe for use in limited ventilation areas, and may be transported via air or ground safely without special handling.
AGM Batteries are preferred when a large amount of amps may be required. In most cases, recharge can be accomplished by using a good quality standard battery charger. The life expectancy (measured as cycle life or years) remains excellent in most AGM batteries if they are not discharged more than 60% between recharges and/or recharged fully every 3-6 months.
Gel Cell Batteries do not offer the same power capacity as do the same physical size AGM batteries. However, the Gel Cell excels in slow discharge rates and slightly higher operating temperatures and with excellent deep cycle capability. Gel Cell batteries are considered deep cycle batteries by virtue of their construction. One big issue with Gel Cell batteries that must be addressed is the CHARGE PROFILE. Gel Cell batteries must be recharged correctly or the battery will suffer premature failure. Please refer to the specification sheet for the max charging current limit. Using Gel Cell chargers is highly recommended.
What Does Hour Rate Mean?
HR (Hour Rate) – All SLA type batteries have their capacity rated depending on the amount of amps they can discharge over a certain period of time. General SLA batteries are usually rated at 20HR, meaning their current over a period of 20 hours. If a battery is rated at 20Ah capacity at 20HR, it means that the battery can discharge 1 amp per hour over that 20 hour period. A High Rate Battery will typically be rated at 10HR or less. So a High Rate Battery that is 20Ah capacity at a 10HR would be able to discharge 2 Amps per hour over a 10 hour period.
Generally, a battery will have more effective capacity if it is discharged slowly and, conversely, the battery will have less effective capacity if it is discharged quickly. For example, if a 20Ah (10HR) rated battery is discharged over a 20 hour period (20HR), the effective capacity could be 23Ah. If the same 20Ah (20HR) battery is discharged over a 5 hour period, then the effective capacity may only be 15Ah—a loss of 25%.
High Rate Batteries are manufactured in a way to maximize quick discharge at the expense of deep cycling and cyclic life. They can discharge high amps in very short periods of time. For example, a 20Ah (10HR) High Rate Battery can discharge 70 amps over a 5 minute period, while a General SLA Battery may only be able to do 45 amps.
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