Electrical: 12V 4000 mAh Lead Acid Battery

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Part Number: 040-BATT4.0
Price: $29.95

NP4-12 12V 4000 mAh sealed rechargeable lead-acid battery. 2.75" long, 3.5" wide, 4" tall, 59 oz.

For bikes with enough space for mounting, lead acid batteries are the most cost effective route, while providing well known reliability.