Optimate battery volt status lithium
These kits allow you to monitor the battery status, which is very easy when you store your vehicle for an extended period and have no access to an AC supply. This way you can recharge the battery before it dies. Monitors have a built-in SAE charge port where you can plug in your Optimate or Zodiac-Mate battery charger. Available for Lead-acid or Lithium batteries, they mount on the battery terminals using the stock M6 screws or you can use an existing SAE port from other Optimate accessories. Sold each.