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Hybrid vehicle has not been used for several months due to COVID-19 pandemic. Vehicle has a 3 year old 12V AGM battery. Battery is not used as a true "starter" battery; it just boots the vehicle's computers so the hybrid batteries can start the ICE.

Vehicle is not located near any electrical outlets.

The 12V battery was not cheap, and I would prefer to continue to use it for cost and environmental reasons. The battery might still be under warranty.

With all that in mind, which option is best to get the vehicle up and running again?

  1. Buy a battery maintainer. Pull the battery from the vehicle and charge it for 1-3 days somewhere safe using the battery maintainer.

  2. Buy a portable jump starter. Jump the battery to get the vehicle's computers running, and start the vehicle's ICE. Drive around for an hour or so.

  3. Buy a new battery and recycle the current one.

Note that #2 is the easiest (no pulling a battery required) and that #3 is much more expensive than #1 or #2.

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You will need an actual battery charger. Most battery maintainers will not charge a completely discharged battery.

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  • Thank you. I wonder if I have my terminology wrong, or have read incorrect marketing materials. The "battery maintainers" I'm finding seem to be more like "battery chargers and maintainers". Can you provide a couple examples of what you think will work? – RockPaperLz- Mask it or Casket Oct 2 '20 at 22:35
  • I can't vouch for the quality of this device, the link is provided for reference only, however this is the type of device you will need. amazon.com/BLACK-DECKER-BC15BD-Battery-Alternator/dp/B00KNMKRU8/… – EᑎOT Oct 5 '20 at 14:12
  • Thank you for the reference. Feedback: (1) I appreciate the reference! (2) I forgot that SE sneakily sends all clicks to Amazon to another website (likely to make more money) (3) if others want to see the product directly, just go to Amazon and search for 'B00KNMKRU8' (4) the review entitled 'Not good for agm batteries' is very concerning - but as you said, you just provided this as a reference, and nothing more! (5) do they make something similar that does not need to be plugged in to AC? – RockPaperLz- Mask it or Casket Oct 5 '20 at 22:23

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