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BMW E46 Battery Replacement and Connection Notes| BMW 325i (2001-2005), BMW 325Xi (2001-2005), BMW 325Ci (2001-2006), BMW 325ti (2001-2004) | Pelican Parts Technical Article
BMW boosts i3 and i3s batteries to 120Ah; 42.2 kWh pack almost doubles original range - Green Car Congress
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