But IMHO this is serious, they are perfectly capable of ruining Dave's reputation if he doesn't take any countermeasures.Yeah Dave's Fine Art Career is totally over...
-old appliances may not have this, I find most battery powered household appliances nowadays come with their own built in Batteriser.
its called a input voltage regulator.
Batteriser instruction sheet...
In all honnesty, that's not how I read that leaflet. Their definition seems more like:
- Active devices: stuff that has an UVLO but no boost
- Passive devices: well, dumb as a brick.
- LED torches: active devices with a boost.
i.e. everything except purely dumb devices who operation changes with battery voltage)
And this has been said on here since day 1.
i.e. everything except purely dumb devices who operation changes with battery voltage)
So basically, just the monkey.
McBryce.
I looked at their website to see the prices. 26.85aud for only 8? I might as well buy a pile of rechargeables! Theres no way these things could ever give a major quantity of improvement but even if they did, is it really worth $27 bucks? The batteries were gonna die eventually. These are only ever useful in the long, long run. And in the long run, you might as well be using rechargeables.
They are very specifically mentioning LED torches [ed: won't work] because they know this will be a classic test.
So basically, just the monkey.
I have an old Garmin GPS (GPS95XL) that could benefit from sleeves on its 4 AA batteries, assuming 300mA is deliverable.
...
Tested with power supply:
@6.0V 260mA (1.6W)
@4.4V 370mA (500mA with backlight)
@4.3V Battery warning
@3.4V 500mA
@3.3V Cut Off
Maybe I don't know what I'm talking about, but will these "Batterisers" be able to output the kind of current needed by some appliances?
They look pretty small, seems like the efficiency would hit the fan if you tried to draw high current from it. I don't mean when the battery has tiny charge in it, I mean a full battery. If I had a full battery, wouldn't drawing 2 amps from the "Batteriser" result in a faster depletion of battery life due to efficiency?
The batterisers might only have an idle current of a few microamps, but it's still a consideration. As I said before, theres also the problem of efficiency. If I draw 2 amps from the batteriser, how much would be drawn from the battery? 2.1A? 2.3A?
Doesn't seem like a very "energy saving" concept. And wouldn't this problem gets worse the more current you draw?
Keep in mind, I'm not talking about an almost dead battery, I'm talking about taking power out of the batteriser with a full battery.
They seem pretty full. Let's say I threw a pair of batterisers on it: What's the short circuit current now? What if my "robot toy" requires 1.5A of current, and the max the batteriser outputs is 1A? I know 2.9A is pretty unrealistic, but I think I have illustrated my thoughts well enough for that to be negated.
My final comment: The implementation chosen seems to be a disaster due to losses in efficiency, no load power consumption and a current limit.
I looked at their website to see the prices. 26.85aud for only 8? I might as well buy a pile of rechargeables!
Theres no way these things could ever give a major quantity of improvement but even if they did, is it really worth $27 bucks?
The batteries were gonna die eventually. These are only ever useful in the long, long run. And in the long run, you might as well be using rechargeables.
My thought exactly, I can lay hands on decent 2400mAH AA NiMH cells in packs of four for £3, a charger with a good reputation was £12 and it charges AAA, AA, C D and 9V cells/batteries.
I have an old Garmin GPS (GPS95XL) that could benefit from sleeves on its 4 AA batteries, assuming 300mA is deliverable.
...
Tested with power supply:
@6.0V 260mA (1.6W)
@4.4V 370mA (500mA with backlight)
@4.3V Battery warning
@3.4V 500mA
@3.3V Cut Off
Uhhh... No, those results looks like it already has boost circuitry in it. It is drawing more current as the voltage drops because it is using that extra current at that voltage to make up the total power it needs to operate.
Adding another boost converter in there will only shorten the battery life due to the redundant converter(s) (in)efficiency siphoning off a little more of the total power available in the cells as you use it. You are adding four more unnecessary boost converters in series with the one inside the GPS that is actually doing something useful already.
You would be adding 4 X whatever Batteroo's power loss is and I highly doubt that their "generic application" boost converter is 4 X as efficient as the "purpose built" one already in the GPS.
They DO have an interesting grasp on mathematics, don't they?
Yes, come to think of it, it is definitely an active load device operating at constant power (1.6W). As you said, the sleeves most probably will make things worse.