Pulse Flex 2i Battery Won't Charge

Hi,

I have owned a BP100 battery for my Pulse Flex 2i for less than a year and it appears not to be charging. I have troubleshot this a number of ways:

- Disconnecting, restarting speaker, then re-attaching the battery

- Disconnecting overnight and re-attaching the next day

- Swapping between speakers (I have 2 pulse Flex 2i speakers)

The result is a battery that appears to be in the red <20% charge all the time and is effectively useless. Can you please advise? This was bought direct from Lenbrook in April 2020 and I can provide the invoice and serial number if required.