For the $19. I don't think it's worth the time. The battery does work it's just not the one I order
You say, "it's not work the time", but I don't believe that, nor do I believe you believe even, for one second. You wouldn't have created this thread is you did. Let me tell you - it IS worth the time. You should still file a claim against them...maybe even two...and, I'll explain exactly why.
Let's start with the amount. If the price paid is $70-100, $19 is not only a relatively large percentage, it's also a large amount. Even if you paid $130-150, while the percentage of loss is decreased, $19 is still a fairly sizable amount. $19 is enough to purchase groceries for 2-3 dinners for a family of three. If you believe it's ok for a family to go without dinner for three days, then, fine, it's "not with the time". If a family not starving is important, then filing the claim IS work the time.
Now, let's move to the morals side of the equation. Yes, it's possible that the company accidentally shipped the wrong battery...but, if that were true, then the company would have probably responded back by now. The fact that the company hasn't responded back means there's a good possibility that they knowingly shipped the wrong, cheaper battery, and are probably doing the exact same thing on other orders placed. This is called a 'scam'...and, if you aren't helping to do anything about it, as the old saying goes, "If you're not part of the solution, then your part of the problem."
Here's my suggestion...do with it whatever you will:
First, contact the seller again, and, in doing so, mention that you previously contacted them, but have not received any reply. Also specify a specific amount of time (give them a specific date) for them to contact you by. Inform them that failure to contact will result in a claim being filled against them. If the wrong battery was an accidental happening, they'll respond...and, if they are knowingly shipping the incorrect items, they won't respond. If that happens, you KNOW they are scamming people, and it becomes your responsibility to report this.
Now, as claudius62 mentioned, if you paid via PayPal, stay the claim directly through them. Honestly, I've had a more than a few similar problems, and all but two of them, PayPal resolved very quickly, refunded my money, and did a "reverse EFT" against the seller, taking the money back from them. PayPal also keeps track of sellers doing this type of activity, and, if enough claims are filled against a particular seller, PayPal will block them from utilizing PayPal's services.
However, PayPal's 'buyer protection' is NOT without problems. In two particular matters...one of which was a scam...PayPal refused to act upon their own rules. The first of these too several months of me "jumping through hoops", before they finally refunded me. The second was more problematic, as PayPal refused to refund, even though I had PROVEN the seller was scamming customers (when a person orders an $800 item, the seller ships (from China) an $18 item, and refuses to refund the amount, or to ship the correct item, that is, OBVIOUSLY, a scam), which forced me to file a second claim, this time directly through the bank that issued the card I had used. Thankfully, my bank understood, very quickly, that this was a scam, and refunded my money as quickly as they could. Then they, in turn, did the 'reverse EFT' against the seller, so that the back didn't lower any money.
The moral of these stories is, if you've been wronged by a seller, be it accidentally, or on purpose (SCAM), it is your responsibility to make an effort (which, sometimes, requires contacting the seller again, and using some "light strongarm" tactics against them) to get things corrected. If the seller refuses (further proof of it being a scam), then it becomes your responsibility to file a claim against them...not just for yourself, but for all potential future customers who could end up being scammed...with your bank, or PayPal (and then though your bank, if need be), to recoup the money. One final point - if payment was done through PayPal, and the seller offers a refund, but the seller revised to pay the return shipping cost, tell this to PayPal, as they (under the 'buyer protection') will cover up to $30 in shipping cost.
As I said before, do what you will. I've provided you with everything you need to know, as well as very valid reasons, for filling a claim. Have a good day, and stay safe.