If you're still using an older Sony camcorder like the CCD-TRV416, finding reliable batteries can be a challenge, but this Synergy Digital replacement has been a solid solution! The 7.4V 2000mAh Li-Ion battery provides plenty of power for extended recording sessions - I've gotten several hours of continuous use on a single charge. It's designed as a direct replacement for the Sony NP-F570, so it fits perfectly and connects securely without any modification needed. The capacity seems accurate - it lasts about as long as my original Sony battery did when it was new. The build quality feels substantial, and it hasn't shown any signs of swelling or capacity loss after several months of use. Installation is straightforward - just slide it into your camcorder's battery compartment until it clicks into place. If you've been struggling with short battery life or can't find original Sony batteries anymore, this Synergy Digital option gives your older camcorder a new lease on life. The price is reasonable compared to hunting down genuine Sony batteries, and the performance has been reliable for both recording and playback. Definitely a smart buy if you want to keep your classic Sony camcorder functioning without breaking the bank on replacement parts!