Depends on the configuration, but it won’t explode. It may just act as if it’s on low battery for a while then stop working as if the battery is drained, when the one battery might only be half drained. If it’s in parallel it could work but with about half the runtime, but it would do just the same fitting just one battery in the proper orientation.
it would do just the same fitting just one battery in the proper orientation
This.
If it’s in parallel anyway, it doesn’t make a difference, slanting it like that, except maybe, making a worse quality connection, that may disconnect with the cell wiggling.
Depends on the configuration, but it won’t explode. It may just act as if it’s on low battery for a while then stop working as if the battery is drained, when the one battery might only be half drained. If it’s in parallel it could work but with about half the runtime, but it would do just the same fitting just one battery in the proper orientation.
This.
If it’s in parallel anyway, it doesn’t make a difference, slanting it like that, except maybe, making a worse quality connection, that may disconnect with the cell wiggling.