I have just visited the 'Tiger Lights' site the logic of my reasoning being that they probably use the same charger, however the "Buy Now" page is not accessible and the business up for sale leading me to think that the whole outfit has packed up.
No accounts for Custom Idea Ltd have as yet been filed for this year and we are about to go into October.
A bit of advice, I would resist the possible temptation, should it exist, to use a 24V laptop charger as we have no knowledge at all of the working of the charging management electronics in the battery case. I think you need a 'techy' friend.
As a further thought, I wonder if the battery case could be modified with say thumb nuts to easily come apart, and spring contacts fitted so that it can be easily filled with individual cells.
Big advantage would be latest high tech Li Ion cells and easy swap. Its an idea