Am trying to figure out if the batteries for I/N: 0181793 & I/N: 0181794 are user replaceable? If yes, what size batteries are we looking at?
Welcome to the Bunnings Workshop community @youngbrokh. It's wonderful to have you join us, and many thanks for your question about Arlec solar lanterns.
The rechargeable batteries in those units are sealed cells and non-replaceable. However, you should expect to get hundreds of recharges on them during their lifespan. The cells used in them typically outlast the old solar rechargeable batteries that would fail after a year or so.
Please let me know if you have further questions.