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Resistance & Self-discharge performance： |
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 Resistance：
F8: resistance variety of FM 7-12 model batteries during discharge . The resistances of new model batteries are listed in the following table.
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Self-discharge performance：
FM and GM series batteries grid is made of multi-component alloy without Sb, purified materials and special techniques reduce self-discharge of the battery,equal to 1/10 that ofcommon Pb-Sb alloy.(see F9)
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