Great video Graham. Which battery type would you say is best suited for heated socks? I struggle with cold feet whilst out in the hills in winter and although the socks work a treat, they absolutely eat AA batteries so I have to carry quite a few spares.
@@neiljackson5137 these batteries do keep their output constant up to the point where they just cutoff without warning. I have only used then in torches on non critical situations but the sick warmer may keep warmer longer rather than cool as battery voltage falls on traditional batteries
Have you tried the 9v ones? I have and they have fake capacities and buck converters. The capacity given is for the 3.7v lithium cell inside, not the 9v switched output.
It puzzles me that lithium ion camera batteries do give a state of charge indication. Having said that, I have a new SmallRig battery that substitutes for the Sony NPFZ100 and it has only been used once so far but I swear it was at 45% charge indicated by the camera yesterday morning when it suddenly dived to a red flashing discharged warning. I’ve recharged it but a fully charged original Sony battery is in the camera just now. I charge it using its own USB C port, not in-camera and I do not have a stand-alone charger for these batteries. I have, until now, charged the original inside the camera using the Sony supplied USB C charging lead.
The difference is that in the 1.5 cells the lithium 3.7v core battery uses a buck converter to achieve the 1.5v out put. The charge status of the 3.7v cell is never monitored. The voltage output just shuts off when the battery management chip in the battery sees the 3.7 v drop to 2.6v
So you didn't test these yourself to see how long they last in something like a remote? You just quoted the manufacturers numbers? I have 2 different PP3 Li-Ion 'batteries' and the quiescent current is quite high, they lose all charge after a couple of months and have quite a low maximum current output so have a very niche usage. Oh and I would only use these in a torch if I had a spare fully-charged set in my pocket - or even a spare torch! Eneloops or primary cells give you plenty of warning by dimming whereas these could suddenly leave you in the middle of a very dark minefield with no light.
You are right in saying the cut off is instantaneous with no "usual" warning by the device that the cut off is near by a dimmer light in the case of a torch or a capacity indicator. I haven't found a use for these cells beyond using them where it doesn't matter when they expire to be honest not a very good purchasing choice.
Great video Graham. Which battery type would you say is best suited for heated socks? I struggle with cold feet whilst out in the hills in winter and although the socks work a treat, they absolutely eat AA batteries so I have to carry quite a few spares.
@@neiljackson5137 these batteries do keep their output constant up to the point where they just cutoff without warning. I have only used then in torches on non critical situations but the sick warmer may keep warmer longer rather than cool as battery voltage falls on traditional batteries
@@GrahamHoughton12Thanks Graham, would you say I’d be better off with Li then over the Ni I’m currently using?
What is their life span? Do they preserve their capacity better than NiMH in the long run or have any other advantages?
Have you tried the 9v ones? I have and they have fake capacities and buck converters. The capacity given is for the 3.7v lithium cell inside, not the 9v switched output.
I have a couple of PP3 ones - I will investigate to see if there is a boost converter fitted and what size of lithium core battery is installed.
If it's a Wh capacity, it's all the same, give-or-take the converter efficiency coefficient, which hopefully isn't much under 90%
I used to use rechargeable AA & AAA all the time with my old camera - well worth it in my opinion.
Are they nicad/NiMh or these new lithium types?
Would these be suitable for the surepet catflap?
Up until the point that the batteries cut off completely and then the flap would not work!
It puzzles me that lithium ion camera batteries do give a state of charge indication. Having said that, I have a new SmallRig battery that substitutes for the Sony NPFZ100 and it has only been used once so far but I swear it was at 45% charge indicated by the camera yesterday morning when it suddenly dived to a red flashing discharged warning. I’ve recharged it but a fully charged original Sony battery is in the camera just now. I charge it using its own USB C port, not in-camera and I do not have a stand-alone charger for these batteries. I have, until now, charged the original inside the camera using the Sony supplied USB C charging lead.
The difference is that in the 1.5 cells the lithium 3.7v core battery uses a buck converter to achieve the 1.5v out put. The charge status of the 3.7v cell is never monitored. The voltage output just shuts off when the battery management chip in the battery sees the 3.7 v drop to 2.6v
Could you put cc please.
now should be available
There are loads of fakes batteries on all popular selling sites. The only sure way to tell if they genuine is the weight.
Am moving away from powerbanks & moved to AA/AAA Ni-MH battery & use powerbank with them. Lithium batteries are useless & dangerous compared to NI-MH
So you didn't test these yourself to see how long they last in something like a remote? You just quoted the manufacturers numbers?
I have 2 different PP3 Li-Ion 'batteries' and the quiescent current is quite high, they lose all charge after a couple of months and have quite a low maximum current output so have a very niche usage.
Oh and I would only use these in a torch if I had a spare fully-charged set in my pocket - or even a spare torch! Eneloops or primary cells give you plenty of warning by dimming whereas these could suddenly leave you in the middle of a very dark minefield with no light.
You are right in saying the cut off is instantaneous with no "usual" warning by the device that the cut off is near by a dimmer light in the case of a torch or a capacity indicator. I haven't found a use for these cells beyond using them where it doesn't matter when they expire to be honest not a very good purchasing choice.