Had big problem with my new Hi10, it just crashes when I played Minecraft. It used to only work for a short while. The battery appeared to be unstable when it came under 50-60%. In the end I tried to lower the brightness. Then it worked fine.
The charger is still a disaster, ordered a new one: Blitz Wolf 4.8A 24W Dual USB Travel Wall EU Charger.
Conclusion: If your Hi10 crashes, try lowering the brightness!