The CSB TPL121500-FR Battery from Critical Power Supplies12 V 150.0Ah BatteryTPL 121500A is a general purpose battery up to 12years expected life under normal float charge.As with all CSB batteries, all are rechargeable,highly efficient, leak proof and maintenance free. h2. Features and BenefitsMaintenance freeGas generated by electrolysis of water during overcharge is recombined on the negative electrode and reformed into electrolyte. With this construction, it is not necessary to add water.Highly reliable long-life sealed lead-acid batteryA combination of a plate grid of lead-calcium-tin alloy, is an excellent active material, a newly developed separator and electrolyte has achieved low self-discharge rate in obtaining a 12-year life.Superior high-rate discharge characteristicsAdopted a newly developed separator. Less internal resistance than in conventional types with superior high-rate discharge characteristics.Small and economical batteryAdopted new raw material and design. No maintenance (no water addition or measurements of specific gravity) is necessary. In addition, no equalizing charge is necessary. It can overlap installation to reduce 40~50% installation space, save 50% installation time and cut down maintenance costs.SafetyElectrolyte is retained securely within the plates and separators without any fluidized liquid. Gas caused by overcharge is recombined on the plate and will not be discharged to the outside in normal condition. If excessive gas is generated causing the internal pressure of the battery to rise, the battery has a safety valve, which releases gas to the outside, and the gas filter incorporated, therefore, safety is ensured.Parallel combinationEach battery can be put together in parallel combinations. It can load the capacity and strength of all battery combinations to obtain maximum current to meet customer’s request.