Had one case where a battery was inserted but the + end was not contacting - the sides walls were a bit tight around the battery and the spring was not able to push it to the end. Had to push the battery manually. Springs are also weakly attached and tend to compress asymmetrically. Otherwise, works as expected.
E
Edward
Excellent
Great product, great service. Fast delivery. Highly recommend robotshop AAA+++
O
Oscar
Good
Ideal for small projects where you need more than just 5 V