03-20-2024, 02:44 PM | #1 |
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Battery Replacement – 92AH vs. 80AH
The battery that came in my F22 M240i is rated at 92AH, and the BMW dealers' replacement batteries I see online are rated at 80AH. What's the practical difference between those ampere-hour ratings for an owner?
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2017 M240i: 23.8K, 28.9 mpg, MT, Sunroof Delete, 3,432#, EB, Leather, Driving Assistance Package, Heated Front Seats | Sold: E12 530i, E24 M635CSi, E39 520i, E30 325is, E36 M3 (2)
TC Kline Coilovers; H&R Front Bar; Wavetrac; Al Subframe Bushings; 18X9/9½ ARC-8s; 255/35-18 PS4S (4); Dinan Elite V2 & CAI; MPerf Orange BBK; Schroth Quick Fit Pro; GTechniq Crystal Serum Ultra Ceramic; Suntek PPF |
03-20-2024, 03:44 PM | #2 |
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https://f30.bimmerpost.com/forums/sh....php?t=1544177
https://f15.bimmerpost.com/forums/sh....php?t=1754369
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2015 BMW 228i in EstorilBlau II Metallic / Terra Dakota Leather - 6-speed manual, M Sport Package, Cold Weather Package, Lighting Package, Premium Package, Harman Kardon premium sound, Anti-theft alarm system, Blue Metallic Matt Accent Moldings, Aluminum Hexagon Interior Strips, Anthracite Headlining |
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03-20-2024, 04:09 PM | #3 | |
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Quote:
I guess what I'm wondering is if the dealer were to replace my 92AH battery with an 80AH battery, what difference is it going to make to me, if any?
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2017 M240i: 23.8K, 28.9 mpg, MT, Sunroof Delete, 3,432#, EB, Leather, Driving Assistance Package, Heated Front Seats | Sold: E12 530i, E24 M635CSi, E39 520i, E30 325is, E36 M3 (2)
TC Kline Coilovers; H&R Front Bar; Wavetrac; Al Subframe Bushings; 18X9/9½ ARC-8s; 255/35-18 PS4S (4); Dinan Elite V2 & CAI; MPerf Orange BBK; Schroth Quick Fit Pro; GTechniq Crystal Serum Ultra Ceramic; Suntek PPF |
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03-20-2024, 04:19 PM | #4 |
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Either should work fine so long as it is registered to the car appropriately. That said these cars work their batteries pretty hard and I personally would not opt for a smaller capacity battery.
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03-20-2024, 04:29 PM | #5 |
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If I have the dealer change the battery, and there's a choice, I'll certainly opt for the higher-amperage battery.
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2017 M240i: 23.8K, 28.9 mpg, MT, Sunroof Delete, 3,432#, EB, Leather, Driving Assistance Package, Heated Front Seats | Sold: E12 530i, E24 M635CSi, E39 520i, E30 325is, E36 M3 (2)
TC Kline Coilovers; H&R Front Bar; Wavetrac; Al Subframe Bushings; 18X9/9½ ARC-8s; 255/35-18 PS4S (4); Dinan Elite V2 & CAI; MPerf Orange BBK; Schroth Quick Fit Pro; GTechniq Crystal Serum Ultra Ceramic; Suntek PPF |
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03-22-2024, 07:00 AM | #6 |
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It depends on how hard you use your battery. Short drives may not let your battery fully recharge. Auto restart may run it down. Seat and steering wheel heaters suck some power. Sitting in the car with the radio on and the engine off, aftermarket lighting, audio systems, convertible top, etc.
Presumably the 80 AH is lighter, as well as cheaper. |
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