Manual Battery Switches Automatic Charging Relays Add-A-Battery Kits
Add-A-Battery Kit - 120A [Boxed]
7650003Don’t get stranded – Add a Battery!
Adding a second battery to the electrical system prevents the unintended discharge of the engine start battery.
Blue Sea Systems popular Add-A-Battery kit was primarily designed for boats with alternator output of 120A or less.
When installed, the Add-A-Battery isolates the start battery from the house loads which prevents the discharge of the start battery. The Add-A-Battery offers a simple way to control the charging and battery switching of two battery banks. The E-Series Dual Circuit Plus™ Battery Switch simplifies the switching while the SI-ACR automates charging between two batteries.
Support
Frequently Asked Questions 
Installation
LED Status ChartReference
Articles
Start Lockout for Two EnginesACR OperationAutomatic Charging Relay - An Alternative to Multiple Output Charging SystemsSI ACR Performance during Charger Float ModeBlue Sea Systems' Dual Circuit Battery SwitchOvercoming Dropout of House Electronics during Engine StartingVideos
Marketing Materials
Product Certificates
CE Certificate for Automatic Charging RelaysDeclaration of Conformity for E and HD-Series Battery SwitchesDeclaration of Conformity for PN 5511eCE Certificate for E-Series and HD-Series Battery SwitchesDeclaration of Conformity for Automatic Charging Relays
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| Specifications | |
|---|---|
| Amperage | 120A |
| Weight | 2.36lb (1.07 kg) |
| Included | ||
|---|---|---|
| Qty | PN | Product |
| 1 | 5511e | e-Series Dual Circuit Plus™ Battery Switch |
| 1 | 7610 | SI-ACR Automatic Charging Relay - 12/24V DC 120A |
| Meets the following Regulatory Specifications |
|---|
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