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| the battery fluid indicates no charge as the red band is below the water level |
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| the dodgy one in the middle of the battery bank store is the one with the battery cap open |
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| topping up the rest of the batteries with de-ionised water and also checking them with gauge |
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| the fluid showing in the top up hole gets checked by the indicator gauge |
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| the gauge --when the gauge instrument floats in the hole it shows the acidity level of the battery |
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| disconnecting the dodgy battery |
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| and by-passing it with a good submarine one |
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| the negative is connected to a positive and vice versa joining the good "new" one to where the dodgy one is missed out!! |
