Hi
This is a strange one,
I have just purchased a leisure battery though the internet which when arrived looks extremely like an old unipart red battery delabeled. I contacted my local unipart stockiest who informed me they stopped making them 3 years ago. Is there any way you know i can cross reference the serial numbers to check this?

I've tried emailing unipart direct, no reply, the numbers are
1S29HB0899

1S26HC455J

Any help would be appreciated
Thanks
Rob