EVALUATION OF BB-248/U LEAD ACID BATTERY DURING CHARGE-DISCHARGE CYCLES AT LOW TEMPERATURE

Authors
  1. Brossard, G.R.L.
  2. Gallop, L.D.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
The behaviour of the lead-acid battery type BB-248/U has been studied during many consecutive charge-discharge cycles. The cranking current and the minimum terminal voltage were 285 A (or 300 A) and 6 V, respectively. The working temperature was successively room temperature, 0C, -20C and -40C while the rechargeability period was only 2 hours. This work shows that such a rechargeability period - with a maximum charge current and an applied terminal voltage of 20 A and 14.25 V (or 16 V), respectively - is far too short to completely recharge the battery. Moreover, the rechargeability rate is only very slightly affected by the value of the maximum applied terminal voltage in the range of 14.25 V to 16 V. Finally, a significant decrease of reserve capacity measured at room temperature has been observed after many charge-discharge cycles at low temperatures.
Report Number
TN-79-15 —
Date of publication
15 Aug 1979
Number of Pages
34
DSTKIM No
79-02948
CANDIS No
87277
Format(s):
Originator's fiche received by DSIS;Hardcopy

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