Sealed Lead Batteries

• Lifetime 3/5 years: They are the standard cost effective option. All batteries are interchangeable and have the same dimensional characteristics, except specific authorizations. In this type of battery, there are the CEAC Tudor TD and Sonnenschein S300, the Yuasa NP and the Steco SAPHIR etc. This is the battery most used in inverters and there are no particular problems encountered in switching from one make to another. They are said to be maintenance free because they are not in direct contact with water. They nevertheless require regular checking.
  

• Lifetime 6/8 years: They are an intermediary battery, the principal advantage of which is its lifetime. They are not always interchangeable between makes because of variation in dimension. They can be sensitive to temperature changes. In this type of battery there are the CEAC A500 or SHC2. They are said to be maintenance free because they are not in direct contact with water. They nevertheless require regular checking.
  

• Lifetime up to 10 years: They are the best performing of the sealed lead batteries. They are sometimes supplied with a guarantee of 5+5 years and they function better in more extreme conditions than those above, particularly if of DRYFIT technology. In this type of battery there are the A400, A600 or the OGIV. Said to be maintenance free they nevertheless require regular checking.

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Un-sealed Lead Batteries

This is the oldest technology still in use today.

These batteries have a lifetime of more than 8 years in static conditions and will function in less restrictive conditions than sealed lead batteries. Their use normally requires installation in a specific room (emission of hydrogen), and regular maintenance including checks on the water level are necessary.

See FE – USR or TEX batteries.

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Un-Sealed NiCd batteries 

Nickel Cadmium batteries have, without doubt, the best performance.

They have a lifetime of up to 20 years and can function in extreme conditions. They are frequently used in high-risk industrial sectors such as petrochemical plants or nuclear power stations, which require a medium to long-term battery life.

As with un-sealed lead batteries they require dual-rate chargers and regular maintenance including checks on water levels. Cost can be a deciding factor in choosing this type of battery. They are either installed in industrial distribution boxes or on site in specific rooms (emission of hydrogen).

See ALCAD LC – MP – HP batteries

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Semi-sealed NiCd batteries

These batteries have the same characteristics as un-sealed NiCd and have a very low water consumption (water can be topped up every 10 years). Maintenance costs are therefore considerably reduced. These batteries are said to be semi-sealed because they have a rate of recombination of gases of 92% whereas sealed batteries have to achieve 95% to meet the C1500 standard. However, a modified space is not required. See battery type ALCAD VANTAGE.

For more details see under `Products’

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Heavy-duty start-up batteries

There are two characteristics that are necessary for start-up batteries. The ampere-hours (Ah), which indicates its nominal capacity, and the amps capacity (e.g. 500A) which corresponds to the number of amps that the battery can supply on start-up.

Other than for vehicles such as cars and trucks they are equally used with generators and all combustion engines.

Average lifetime – 4 years.

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Heavy duty batteries for traction

These are generally used with warehouse plant, handling equipment and forklift trucks. They therefore need to be operational for several hours at a time and respond to varying loads. They are generally fitted in tailor-made compartments for use with warehouse handling plant. It is therefore crucial when replacing the batteries to ensure the replacement is of the same type, the manufacturer’s reference and the make and type of vehicle to which it is to fitted. The recharging method of these batteries is equally specific and requires specific chargers (see BENNING chargers). Lifetime 4-6 years.

For more details see under `Products’.

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