

I had a similar failure rate then changed my charger and haven’t had a battery fail since. My original charger was Energiser branded, which is the most common battery where I live so I thought it had to be fine. I replaced it with an eneloop BQ-CC55. I don’t love it - it’s a fast charger and it makes batteries uncomfortably hot, but it was able to charge batteries to full health that both my energiser and trickle charger thought were dead dead. That includes energiser batteries!





















Concrete doesn’t dry, it cures. It is quite possible to fill 3D prints with it, and it has been done.