This comprehensive guide provides detailed instructions on how to repair and rebuild National NiCad batteries, commonly used in RC cars. Learn the essential techniques for reviving your old NiCad batteries, saving you the expense of buying expensive replacements. This guide covers everything from identifying common battery problems to step-by-step instructions on disassembling, cleaning, and reassembling the battery pack. You'll also find valuable tips and tricks for maximizing the lifespan and performance of your NiCad batteries. With this guide, you can breathe new life into your aging batteries and keep your RC car running smoothly.