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Yes on all counts. Not only to they charge faster and run longer, but they put out more juice while they're running, making your car noticably faster. If you have 2 sets of batteries, you can drive non-stop except for a 2 minute pit-stop to swap the batteries. You can fully charge a dead set before you can wear a fresh set down. Mine last over 30 minutes running a stage 2 motor almost full out.
Truly the best X-mod upgrade, and I've done all the RS upgrades.
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