Usually, the 1-time loss/damage replacement is not free even though it’s covered under the warranty. At least from my purchase, the 1-time loss/damage replacement would cost me $300 for each hearing aid replacement. But it’s stipulated clearly that it’s going to be $300/each to replace due to loss/damage.
If I were you, I would insist on not having to pay for the rechargeable batteries because they’re part of the whole system and there’s no explicit exclusion stated. But since you already paid and it’s only $65, you may decide that it’s not worth the hassle to bring it up… unless/until it happens again and then you’ll have to fork out another $65 because you’ve accepted their precedence by paying for it before.
If I remember correctly, someone on this forum was trying to ask to see if they could switch to a disposable battery version due to the very issue you’re experiencing, but without much luck. It might even be Jim here (@SpudGunner). I think in his case, the disposable battery version wasn’t available yet so he didn’t really have a choice when he got his More 1 in the first place.
I wonder if the disposable version is cheaper simply because you don’t need a charger and rechargeable batteries.
It costs me about $32/year for disposable batteries for an average of 4 day use per set. If the rechargeables can last me about 2 years at the cost of $65/pair, then cost-wise, it’s about the same either way. Then I’d rather use the rechargeable instead for the convenience of not having to keep disposables around with me and not having to change out batteries in the middle of the day. But that’s just me.