Battery Isolators for Multiple Batteries

Battery Isolators eliminate multi-battery drain when two or more battery banks are in a charging system. These act as a check valve between the batteries and the alternator, allowing current to only flow in one direction, from the alternator to the batteries. Quality and reliability are the cornerstone of our battery isolator selection, featuring leading manufacturers such as Cooper Bussmann Sure Power and Cole Hersee.

Need a battery isolator for automotive, equipment or marine applications? Waytek offers a variety of solid state models, all designed to meet or exceed OEM specifications. Want a battery isolator with "brains"? Waytek also carries a selection of smart battery isolators, which are smaller, lighter, more flexible and generate less heat than traditional models.
1 - 12 of 23
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Description
Price
Quantity
  • Cole Hersee 48525 Smart Battery Isolators
  • Category: Battery Isolators
  • Manufacturer: Cole Hersee
  • # of Battery Banks: 1
  • # of Alternators: 2
  • Termination: 5/16" -24 copper studs
  • Amp Rating: 85A
  • Voltage: 9-16V
  • LED status indicator
  • Works with SAE J1455 & J1113
  • Operating Temperature: 185°F (85°C) to -40°F (-40°C)
  • IP66 Ingress Protection
  • Works with all alternator types
  • Smart battery isolators are smaller, lighter and generate less heat than standard battery isolators
  • Reduces battery charging system workload by not connecting auxiliary battery until primary battery is charged to 13.2V
  • Allows bi-directional charging from alternator or from shore/campground charging components
  • Optional start assist - connect to a momentary switch that will allow the auxiliary battery to assist the starting battery
Item#:
77050
Manufacturer Item:
48525
Manufacturer:
Cole Hersee-A Littelfuse Brand
Min. Order Qty:
1
Avail #:
87
 
RoHS Compliant
REACH Compliant
1+
67.3000
4+
60.5700
10+
53.8400
EACH
  • Cole Hersee 48530 Smart Battery Isolators
  • Category: Battery Isolators
  • Manufacturer: Cole Hersee
  • # of Battery Banks: 1
  • # of Alternators: 2
  • Termination: 5/16" -24 copper studs
  • Amp Rating: 200A
  • Voltage: 9-16V
  • LED status indicator
  • Works with SAE J1455 & J1113
  • Operating Temperature: 185°F (85°C) to -40°F (-40°C)
  • IP66 Ingress Protection
  • Works with all alternator types
  • Smart battery isolators are smaller, lighter and generate less heat than standard battery isolators
  • Reduces battery charging system workload by not connecting auxiliary battery until primary battery is charged to 13.2V
  • Allows bi-directional charging from alternator or from shore/campground charging components
  • Optional start assist - connect to a momentary switch that will allow the auxiliary battery to assist the starting battery
Item#:
77051
Manufacturer Item:
48530
Manufacturer:
Cole Hersee-A Littelfuse Brand
Min. Order Qty:
1
Avail #:
350
 
RoHS Compliant
REACH Compliant
1+
106.2400
4+
95.6100
10+
84.9900
EACH
  • Cole Hersee 48090 Battery Isolators
  • Category: Battery Isolators
  • Manufacturer: Cole Hersee
  • # of Battery Banks: 1
  • # of Alternators: 2
  • Termination: (3) 1/4" Studs
  • Amp Rating: 90A
  • For use in 12-36 volt DC negative ground systems
  • Mounting holes: (2) 9/32" holes
  • Battery isolators are designed for vehicles and equipment with multiple batteries - one for starting the engine and another for powering accessories
  • Battery isolators prevent a battery with a higher charge from draining into a battery with a lower charge
  • Ensures your accessories won't drain your starting battery
  • Allows for both batteries to be charged simultaneously from one source
  • Electronic components are embedded for protection from contamination and vibration
  • Integral heat sink provides efficient heat dissipation
  • More battery management products available
Item#:
77053
Manufacturer Item:
48090
Manufacturer:
Cole Hersee-A Littelfuse Brand
Min. Order Qty:
1
Avail #:
3
 
RoHS Compliant
REACH Compliant
1+
41.5500
4+
37.3900
10+
33.2400
EACH
  • Cole Hersee 48120 Battery Isolators
  • Category: Battery Isolators
  • Manufacturer: Cole Hersee
  • # of Battery Banks: 2
  • # of Alternators: 1
  • Termination: (3) 5/16" Studs
  • Amp Rating: 140A
  • For use in 12-36 volt DC negative ground systems
  • Mounting holes: (4) 9/32" holes
  • Battery isolators are designed for vehicles and equipment with multiple batteries - one for starting the engine and another for powering accessories
  • Battery isolators prevent a battery with a higher charge from draining into a battery with a lower charge
  • Ensures your accessories won't drain your starting battery
  • Allows for both batteries to be charged simultaneously from one source
  • Electronic components are embedded for protection from contamination and vibration
  • Integral heat sink provides efficient heat dissipation
  • More battery management products available
Item#:
77054
Manufacturer Item:
48120
Manufacturer:
Cole Hersee-A Littelfuse Brand
Min. Order Qty:
1
Avail #:
5
 
RoHS Compliant
REACH Compliant
1+
66.5500
4+
59.8900
10+
53.2400
EACH
  • Cole Hersee 48122 Battery Isolators
  • Category: Battery Isolators
  • Manufacturer: Cole Hersee
  • # of Battery Banks: 2
  • # of Alternators: 1
  • Termination: (3) 5/16" Studs, (1) #10 Stud
  • Amp Rating: 140A
  • For use in 12-36 volt DC negative ground systems
  • Mounting holes: (4) 9/32" holes
  • Battery isolators are designed for vehicles and equipment with multiple batteries - one for starting the engine and another for powering accessories
  • Battery isolators prevent a battery with a higher charge from draining into a battery with a lower charge
  • Ensures your accessories won't drain your starting battery
  • Allows for both batteries to be charged simultaneously from one source
  • Electronic components are embedded for protection from contamination and vibration
  • Integral heat sink provides efficient heat dissipation
  • More battery management products available
Item#:
77056
Manufacturer Item:
48122
Manufacturer:
Cole Hersee-A Littelfuse Brand
Min. Order Qty:
1
Avail #:
9
 
RoHS Compliant
REACH Compliant
1+
79.3300
4+
71.3900
10+
63.4600
EACH
  • Sure Power battery isolators eliminate multi-battery drain when 2 or more battery banks are in a charging system
  • Allows each battery to charge according to its own needs
  • Prevents auxiliary power from draining the starter battery
  • Battery isolators make sure you are never stranded with a dead starter battery
  • Sure Power model #122
  • Fully solid state
  • 25 amps
  • 3 studs, 6mm
  • Mounting holes: 2 holes at .210"
Item#:
80045
Manufacturer Item:
122
Manufacturer:
EATON
Min. Order Qty:
1
Avail #:
17
1+
30.9200
10+
28.7500
EACH
  • Sure Power battery isolators eliminate multi-battery drain when 2 or more battery banks are in a charging system
  • Allows each battery to charge according to its own needs
  • Prevents auxiliary power from draining the starter battery
  • Battery isolators make sure you are never stranded with a dead starter battery
  • Sure Power model #702
  • Fully solid state
  • 70 amps
  • 3 studs, 6mm
  • Mounting holes: 4 holes at .210"
Item#:
80046
Manufacturer Item:
702
Manufacturer:
EATON
Min. Order Qty:
1
Avail #:
12
1+
27.8100
10+
25.8600
EACH
  • Sure Power battery isolators eliminate multi-battery drain when 2 or more battery banks are in a charging system
  • Allows each battery to charge according to its own needs
  • Prevents auxiliary power from draining the starter battery
  • Battery isolators make sure you are never stranded with a dead starter battery
  • Sure Power model #703
  • Fully solid state
  • 70 amps
  • 4 studs, 6mm
  • Mounting holes: 4 holes at .210"
Item#:
80047
Manufacturer Item:
703
Manufacturer:
EATON
Min. Order Qty:
1
Avail #:
6
1+
41.7400
10+
38.8100
EACH
  • Sure Power battery isolators eliminate multi-battery drain when 2 or more battery banks are in a charging system
  • Allows each battery to charge according to its own needs
  • Prevents auxiliary power from draining the starter battery
  • Battery isolators make sure you are never stranded with a dead starter battery
  • Sure Power model #952
  • Fully solid state
  • 95 amps
  • 3 studs, 6mm
  • Mounting holes: 4 holes at .210"
Item#:
80050
Manufacturer Item:
952
Manufacturer:
EATON
Min. Order Qty:
1
Avail #:
30
1+
34.6800
10+
32.2500
EACH
  • Sure Power battery isolators eliminate multi-battery drain when 2 or more battery banks are in a charging system
  • Allows each battery to charge according to its own needs
  • Prevents auxiliary power from draining the starter battery
  • Battery isolators make sure you are never stranded with a dead starter battery
  • Sure Power model #1202
  • Fully solid state
  • 120 amps
  • 3 studs, 8mm
  • Mounting holes: 6 holes at .210"
Item#:
80051
Manufacturer Item:
1202
Manufacturer:
EATON
Min. Order Qty:
1
Avail #:
12
1+
50.5700
10+
47.0300
EACH
  • Sure Power 2002 Multi Battery Isolator
  • Category: Battery Isolator
  • Manufacturer: Cooper Bussman Sure Power
  • System operation: 6-50 V DC
  • Max current: 200 AMP
  • Operating temperature: -40°c to 85°c
  • Ground Type: Negative 
  • Terminal and hardware included
  • Vehicle and marine applications
Item#:
80053
Manufacturer Item:
2002
Manufacturer:
EATON
Min. Order Qty:
1
Avail #:
13
1+
84.8200
10+
78.8800
EACH
  • Sure Power battery isolators eliminate multi-battery drain when 2 or more battery banks are in a charging system
  • Allows each battery to charge according to its own needs
  • Prevents auxiliary power from draining the starter battery
  • Battery isolators make sure you are never stranded with a dead starter battery
  • Sure Power model #3002
  • Fully solid state
  • 300 amps
  • 3 studs, 1/2"
  • Mounting holes: 2 holes at .313"
Item#:
80061
Manufacturer Item:
3002
Manufacturer:
EATON
Min. Order Qty:
1
Avail #:
12
1+
447.7700
10+
416.4200
EACH
1 - 12 of 23
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Waytek is a one stop shop for all your battery management system needs. From tin plated battery lugs designed to protect against corrosion to electrical disconnect switches engineered to protect against electrical fires, theft and excessive battery drain -Waytek’s got you covered. Below are some additional products to help you easily install and manage your battery isolator.

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