These automatic solid state devices allow you to connect your engine alternator directly to both batteries or multiples of batteries without fear of overcharging or of one higher charged battery discharging into the other lower charged battery.
Using this unique device, batteries are electrically isolated from each other. When your engine(s) is running, both batteries are being charged automatically, independent of each other.
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BI2-100A 100-AMP Battery Isolator - API Marine
2 Batteries, 1 Alternator Negative Ground 4.5"L x 4.55"W x 2.52"H (114mmL x 116mmW x 64mmH) I/O studs 1/4-28 thread Blue aluminum finned heat sinkpress fit iodeswelded connections Can be wired for sense E-terminal for e
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BI2-130A 130-AMP Battery Isolator - API Marine
2 Batteries, 1 Alternator Negative Ground 6.5"L x 4.55"W x 2.52"H (165mmL x 116mmW x 64mmH) I/O studs 5/16-18 thread Blue aluminum finned heat sinkpress fit diodeswelded connections Can be wired for sense E-Terminal for
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BI2-165 165-AMP Battery Isolator - API Marine
2 Batteries, 1 Alternator Negative Ground 9.0"L x 4.55"W x 2.52"H (229mmL x 116mmW x 64mmH) I/O studs 5/16-18 thread Blue aluminum finned heat sinkpress fit diodeswelded connections
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BI2-200 200-AMP Battery Isolator - API Marine
2 Batteries, 1 Alternator Negative Ground 12.5"L x 4.55"W x 2.52"H (318mmL x 116mmW x 64mmH) I/O studs 5/16-18 thread Blue aluminum finned heat sinkpress fit diodeswelded connections
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BI2-240 240-AMP Battery Isolator - API Marine
2 Batteries, 1 Alternator Negative Ground 12.5"L x 4.55"W x 2.52"H (318mmL x 116mmW x 64mmH) I/O studs 3/8-16 thread Blue aluminum finned heat sinkpress fit diodeswelded connections
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BI2-75 75-AMP Battery Isolator - API Marine
2 Batteries, 1 Alternator Negative Ground 4.5"L x 4.55"W x 2.52"H (114mmL x 116mmW x 64mmH) I/O studs 1/4-28 thread Blue aluminum finned heat sinkpress fit diodeswelded connections
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BI3-130 130-AMP Battery Isolator - API Marine
3 Batteries, 1 Alternator Negative Ground 6.5"L x 4.55"W x 2.52"H (165mmL x 116mmW x 64mmH) I/O studs 5/16-18 thread Blue aluminum finned heat sinkpress fit diodeswelded connections
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BI3-165 165-AMP Battery Isolator - API Marine
3 Batteries, 1 Alternator Negative Ground 9.0"L x 4.55"W x 2.52"H (229mmL x 116mmW x 64mmH) I/O studs 5/16-18 thread Blue aluminum finned heat sinkpress fit diodeswelded connections
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