This case would be optimal. Which batteries do you have for it?
Do protected batteries fit in the case?
Has your lamp a low voltage protection?
Don’t buy the soshine h2, take a look at the review here
Banggood.com has a lot of nice and cheap brand Batteries, don’t buy any fire batteries as they are almost always bad.
The BLF coupon code gives additional 8% on banggood
some example unprotected cells…
Good Samsung cell for less than 5$ Not so much capacity but lots of cycles
Panasonic ncr18650pf 2900mAh 7.20$
If protected cells fit, you should consider them for extra safety
Sanyo 2400mAh with lots of cycles for 12$ a pair
Panasonics ncrbs are the cells with the highest capacity, these are cheaper at wallbuys.com
Ncrbs for 15$ a pair