Im installing a D4900 [main] in paral. w/SB500 49, noli 14AH, JY 2000. Is a isolator needed? (XS Power SB500-51 Supercapacitor Battery Module 4000 Watt Group 51)

Answer

Jan 02, 2026 - 07:01 AM

A battery isolator would only need to be used to prevent one battery from draining the others. So for example, if the D4900 and the SB500 were part of an auxiliary battery bank, you could put an isolator in between your auxiliary battery bank and your main starting battery so that way your audio system doesn't drain the main starting battery. But you wouldn't put an isolator between the two of those particular units. The SB500 must have a direct connection to the D4900 in order to maintain and top itself off.

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Im installing a D4900 [main] in paral. w/SB500 49, noli 14AH, JY 2000. Is a isolator needed?

XS Power SB500-51 Supercapacitor Battery Module 4000 Watt Group 51

XS Power SB500-51 Group 51 12V Super Capacitor Bank, 4000 Watts Installing a car audio capacitor in your ride will be a game changer for your sound system. This battery can act as your (only) auxiliary battery or be added to a battery bank with zero hassle. Advantages of the Super Capacitor M... See More

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Im installing a D4900 [main] in paral. w/SB500 49, noli 14AH, JY 2000. Is a isolator needed? XS Power SB500-51 Supercapacitor Battery Module 4000 Watt Group 51

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