The batteries you have should work but...
No name and icr chemistry pretty much mean they are generic, low amp batteries that if and when they fail, they will do so by venting flames.
Imr chemistry batteries can still vent but it will just vent hot gasses that will not combust.
Upgrade when you can and be careful not to abuse your current batteries.
Don't leave them charging unattended. Don't carry them unprotected, loose in your pockets or bag. Don't use them if they are dented or damaged.