Bought this to replace a worn-out pack in an older RC plane and it fits the same slot perfectly. The flat top and 400mAh rating match what I needed, and the charge holds steady through my whole flight session.
Brian★★★★★
The capacity is spot-on for my small DIY project, these hold a charge well even after a few weeks sitting in the drawer. Shipping took a bit longer than I'd like due to the air freight restrictions, but the price and quality make up for it.
Julian★★★★★
Kept my camera's backup power alive during a whole day of hiking photos—the 400mAh rating held up exactly as listed. Shipping took a bit because of the air cargo rule, but that's on the carrier, not the battery. Solid little cell for the price.