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A perfect review of these articles has already been written here by Jiří from Brno. It perfectly sums up almost everything that can be written about them, so I won't repeat it here, and will only mention what he didn't elaborate on: this is a disadvantage that I am not sure how relevant it really is. BATTERY RECHARGE IS ALSO ONLY ALLOWED BY THE SUPPLIED CABLE, but I am not clear why. The cable does not show any signs of limiting the charging current to the battery (but maybe I'm wrong! ). In addition, the same 4x cable comes with both the AA and AAA variant, visually it is not distinguishable which is for which variant, although each has a different charging current. If the charging is controlled by the circuit inside the battery, the command to use the origo cable makes no sense. The only thing I can think of is that modern chargers can change the output by changing the output voltage, and connecting a voltage higher than 5V would probably be the death of these batteries. However, even such chargers will only allow higher voltages after they have "sniffed" the compatibility of the connected device. I don't know.
almost all pluses, all nicely summed up by Jiří from Brno
recharging is "allowed" only with the supplied cable
possible replacement of the cable with a variant for AA
Verified purchase - review from a price comparison website
Buying AAA 1.5V lithium cells has saved some of my devices from being thrown away. For example. the Olympus digital audio recorder was virtually unusable with a NiMh battery, even though it had the power supply type set to NiMh and even though I used the special battery supplied with the recorder. Due to the low rated voltage and voltage drop during discharge, it worked with any NiMh cell for only a few minutes before it shut down spontaneously. With a lithium cell, I can now record for up to several hours. Similarly, the higher power laser pointer is again usable.
The built-in LED indicator at the positive pole of the cell has 3 states: not lit - the cell is not charging; flashing - the cell is charging; permanently lit - the cell is connected to the charger and is fully charged.
The only relatively major disadvantage of the evaluated lithium cells is that they have no indication of remaining charge. It is not possible to tell if they are fully charged or close to being fully discharged. For alkaline, zinc-carbon and NiMh cells, just measure the voltage, or load by connecting a resistor and measure the voltage. The magnitude of the voltage gives a good indication of the state of the cell. Although the voltage of the internal lithium cell inside the AAA battery also decreases with discharge, the battery has a built-in inverter that reduces the voltage from approximately 4.3 V to 3.0 V typical for a lithium cell. Built-in electronics change the voltage to an output value of 1.5 V, which is kept constant. It is basically a stabilized source. The described feature is an advantage for the use of the cell and at the same time a disadvantage for the evaluation of the state of charge. I have no choice but to always fully charge the cell before critical use, where an unexpected discharge would lead to an interruption of function and e.g. data loss.
I have been using the articles for a short time to evaluate their lifetime. But in any case, they opened up a new perspective for me.
The cells hold a voltage of 1.5 V until they are completely discharged, then the voltage drops to zero.
Instruments equipped with these cells operate at full power all the time, they do not show any deterioration of function due to voltage drop.
It outperforms NiCd and NiMh batteries, which have a nominal voltage of only 1.2 V. Lithium batteries can be used as a full replacement for alkaline cells in terms of voltage.
The cells do not require the special charger needed for NiMh batteries. A standard charger with a 5 V USB output can be used.
A "Hydra" cable with four pins is included, up to 4 cells can be charged simultaneously.
The cells have a lower weight compared to NiMh AAA batteries.
The LED on the + side of the pole indicates charging.
There is no simple way to determine the charge level of the cells. Thanks to the built-in inverter in each cell, they still maintain 1.5 V. Only when they are fully discharged does their voltage drop sharply.
The cells have a capacity of only 500 mAh, which is less than conventional alkaline or NiMh cells (typically 800 - 1000 mAh).
Verified purchase - review from a price comparison website
Excellent batteries. I already have the AA type and I cannot praise it. Voltage 1.5 V, battery life super, classy charging. Finally, until now it was still written that rechargeable batteries cannot have 1.5 V and lo and behold, they can!
Super product.
Nothing.
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