Review on 🔋 Tenergy TN486U 5-Bay Universal Battery Charger with LCD, Micro USB/Type C Input, for Rechargeable AA, AAA, C, D, and 9V Batteries by Christina Kharel

Starting to really like this charger. It actually charges each cell independently and can even identify bad cells, which is nice. Even though the D-Cells are PHYSICALLY blocking the 9V slot, you can certainly install it with a pair of 9V wire clamps so you can charge 9V at the same time with no consequences as far as I can tell. To be honest the only thing I can think of to improve this product is maybe a similar extension so you can load 9V along with C and D cells physically blocking the 9V slot.