A new valve regulated battery range in Gel technology for telecom application was developed. The 12 V monoblocks can be installed in 19" or 23" racks with 300 mm respect. 600 mm depth. Analysis of failures occurred in the past led to improvements of design, process and materials, which have been implemented in the new range. The charging regime was optimized to ensure high state of charge over the whole temperature range during float charge.
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