The 502828 3.8V 420mAh Lithium Polymer Battery is a rechargeable lithium-polymer pouch cell engineered by VATS Battery for reliable, long-lasting power in modern electronic devices. Technical Specifications Model Number 502828 Battery Type Li-polymer Battery Size 5.8 × 28 × 28 mm (T × W × L) Nominal Voltage 3.8V Nominal Capacity 420mAh Charging Voltage 4.2V Cut-off Voltage 3.0V Standard Discharge Current 0.2C – 0.5C Max Discharge Current 1C Cycle Life 500 cycles Operating
Honestly, it’s a solid 10/15! Finding a reliable 10500 cell with a true 10C discharge rate for our custom power tool prototypes was a nightmare until we found VATS. The continuous discharge is super steady, and the capacity is exactly as advertised. What blew me away was their OEM service—we needed custom wiring and specific connectors, and their engineering team nailed it on the first try. If you're looking for custom high-drain lipo packs, these guys are the real deal.
Spot on service from start to finish. I was a bit skeptical about ordering overseas because we needed these 400mAh batteries urgently for a client's smart pen project. But blimey, they arrived in just over a week! They were out of stock initially, but the communication was brilliant, and they shipped them out the moment they were ready. The packaging was top-notch too, very secure. Will definitely be placing a bulk order soon.
Super expérience avec ce fournisseur. J'ai d'abord demandé des échantillons gratuits pour tester la tenue des 500 cycles sur nos mini-drones, et l'équipe commerciale a été ultra réactive. Les tests sont excellents, la tension de 3.7V reste bien stable. Le service client parle un anglais parfait et suit le dossier de près. C'est un vrai plaisir de travailler avec des pros.
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