I actually might know products where the batteriser might be useful. Canon powershot cameras. When they move the lens, they shut down with low battery, and they dont like rechargeables too much. So I guess high current+ESR triggers the undervoltage circuit, it wouldnt with this.
This needs to be tested, but I think it could be a problem, because Ysjoelfir measured about 500 mV voltage drop when switching on a 0.5 A load and 750 mV for 1 A:
https://www.eevblog.com/forum/projects/batteroo-testing/msg1101667/#msg1101667
I dont think that is a fair test. Quite obviously the batteriser doesnt have huge output capacitor (which might be a design flaw), and it is possible to create huge current spikes, where the loop is not going to respond fast enough. Most realistic loads are not going to have those high A/s load swings.
About the burns: Isnt the metal running along the battery connected to one of the electrodes? So basically you can create a short with two batteries with batterisers in a hand (serious design flaw)?
Using a BatteriserBatteroo Sleeve is a surefire way to guarantee SD card data corruption! Not just "eventually" but somewhere between "likely" and "guaranteed." The camera needs to know how much battery juice is left to be sure it can safely encode and write an image! Circumventing this intentional shutdown safety mechanism is just plain dumb.
I dont know. Writing SD happens very infrequently. Also, there is no data to support your claim, nor could be, since there was no time to make tests.
Also, you must realize, I am not for batteriser, quite the opposite. But I also dont like when people come up with bad reasons supporting their claims. 2 solid reason is better than 2 solid and 1 bogus/made up. The toy train must be already very convincing.
as far as i remember the camera in question is a powershot S5