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Old 08-28-2016, 07:46 PM   #21
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Originally Posted by O C Diver View Post
........... Both positive and negative leads off charger are all fused (yellow holders by battery terminal)...........
Fuse the positive only.
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Old 08-28-2016, 08:34 PM   #22
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Originally Posted by WesK View Post
Fuse the positive only.
Came from the charger manufacturer that way. Since the batteries are in series, I assumed the manufacturer (who approves of this application) had a reason for fusing the negatives. So I didn't remove them.

Ted
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Old 08-28-2016, 08:37 PM   #23
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I think Icom radios used to fuse both positive and negative...believe they said it was for reverse polarity protection.
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Old 08-28-2016, 08:52 PM   #24
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Originally Posted by boatpoker View Post
Hydrogen is the lightest know element and will go straight up which is why there are restrictions on what electrical equipment can be mounted above a battery.

As to AGM's bursting, over charging from a faulty or cheap charger or improperly set charger or internal fault in the battery itself.

There is a reason ABYC holds AGM, GEL and conventional wet cells to the same standard as evidenced by the AGM shown in the photo below.
While I could move the sealed ignition protected charger and outlet to meet the standard, the risk factor of a spark in my application is near absolute zero. If I took the risk factor of a spark to be significant, I would have to move the batteries as the motor brushes spark every time the bow thruster is used. Which do you think poses a greater risk?

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