Cazalfie Posted September 6, 2023 Share Posted September 6, 2023 Hello, I've got a 2003 and even with a new battery, if I hadn't used it in a few weeks, the battery is completely dead and needs jump started every time. A bit annoying as I store away from my home. How long should it stay charged for? Any advice how to prolong it? It makes me anxious to get away into the wilds... it's a 3.5 engine. Thank you. Quote Link to comment Share on other sites More sharing options...
Picasso Posted September 6, 2023 Share Posted September 6, 2023 Hi you profile says yours is a 3.0 not 3.5 if start motor on way out it will drain battery had similar problem get starter checked Quote Link to comment Share on other sites More sharing options...
Fred Posted September 6, 2023 Share Posted September 6, 2023 (edited) Sounds like you have a parasitic drain i have left my car with a fully charged good battery for a month with no issues. After each time your battery goes flat you need to charge it overnight, it will never recover enough just driving around and dont rule out a bad battery even if it is new it does happen. I've attached a video to show you how to test for parasitic draw and how to diagnose whats causing it, it's pretty much the same for any car, oh and a good multi meter will have a fuse to stop damage to the multi meter unlike the one he's using LOL Edited September 6, 2023 by Fred Quote Link to comment Share on other sites More sharing options...
Rojie Posted September 7, 2023 Share Posted September 7, 2023 17 hours ago, Cazalfie said: Hello, I've got a 2003 and even with a new battery, if I hadn't used it in a few weeks, the battery is completely dead and needs jump started every time. A bit annoying as I store away from my home. How long should it stay charged for? Any advice how to prolong it? It makes me anxious to get away into the wilds... it's a 3.5 engine. Thank you. Hello Y, FYI, Your engine is not a 3.5L. The 3.5L was not introduced until the 2008, Gen 2 model. IF your engine is a 3.5L, it is an aftermarket upgrade (if a 3.5 would fit as gearbox is different too. Quote Link to comment Share on other sites More sharing options...
Geralt Posted September 13, 2023 Share Posted September 13, 2023 On 9/6/2023 at 8:49 PM, Fred said: Sounds like you have a parasitic drain Agreed. At 4:14 in the video, he says he has 25mA quiescent current but the meter says 250mA, ten times what he was expecting! Anyway, I measured the quiescent current on my 2003 2.4L non-hybrid and it was about 40mA. 1 Quote Link to comment Share on other sites More sharing options...
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