These are a niche product, using a 3.6V Li-Ion cell with a buck converter board at the top. Their ~1800mAH capacity (questionable, depends on drain rate) is at a near constant 1.5V so they are best for devices sensitive to small voltage drops, things where if you used a NiMH they would stop functioning long before the NiMH cells had discharged much.
You could argue that such devices have a very poor design to do that, but ultimately most people find out after they've bought it and found the product has very poor runtime. Certain rifle scopes and old cameras are two examples.
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You could argue that such devices have a very poor design to do that, but ultimately most people find out after they've bought it and found the product has very poor runtime. Certain rifle scopes and old cameras are two examples.
Thank you!