About this deal
PB2S supports QC3.0 + PD3.0 fast charging, compatible with most phones fast charging adapters on the market, easy to pair and use. CV: Når cellen/cellerne er næsten færdigopladet, skifter opladeren over til at oplade med en faldende strømmængde indtil cellen/cellerne når en spænding på 4.2V. Når cellen/cellerne når 4.2V, er opladningsprocessen færdig, og batteriet er fuldt opladet. Xtar PB2S opladeren har mulighed for at genaktivere dybt afladet celler og celler med en spænding på 0V. Mange opladere på markedet kan ikke oplade sådanne batterier. Xtar PB2S opladeren er virkelig bevendt her, og kan i mange tilfælde "redde" sådanne celler. Man indsætter blot det/de dybt afladet batteri i PB2S opladeren, nøjagtigt som ved en normal opladning, og opladeren vil detektere en/de afladet celle(r) og forsøge at genaktivere den/dem. After inserting the battery and pressing the side button, the display shows "OUT1" as output with a battery charge percentage of 98%. The full charge took 2 hours and 28 minutes, and a total of 24.26Wh. This shows that the internal circuit of PB2S can judge the performance of the rechargeable battery, and select the appropriate current according to the internal resistance, voltage, capacity and other conditions to achieve safe and fast charging.
PB2S has three-stage charging (TC-CC-CV). The battery charger uses the float current (TC) to "wake up" and protect the batteries when the battery voltage is very low. After the voltage becomes normal, the charger starts constant current (DC) charging. When the battery is almost fully charged, the charger starts constant voltage (CV) charging, to make sure the battery is fully charged and less damaged. Xtar PB2S oplader kittet inkluderer et Type C USB-kabel. Kittet inkluderer ikke en AC/DC adapter. Enhver strømkilde med et USB-stik er nok til at forsyne opladeren, det kunne eksempelvis være en telefon eller computer med en fri USB-port. Det anbefales at strømkilden understøtter QC3.0 / PD3.0 for at opnå alle opladerens fordele. Det er muligt at bruge en strømkilde med lav udgangsstrøm, men i sådanne tilfælde vil opladningstiden forlænges. USB-C and USB-A ports can both be used for output and charge two external devices at the same time.The built-in high-precision MCU makes the end-of-charge voltage up to ±0.05V, and the charger will automatically stop charging after the batteries are fully charged, safely and reliably. By pressing the side button and going to slot n.2, the display shows the estimated volts, in real time, of the battery being recharged as well as the 1.7A charging current. Using two 18650 batteries of other brands for testing, the PB2S can also start the PD3.0 protocol. The input voltage reaches 12V, the input current is close to the nominal 1.5A, and the input power reaches 17.78W. Fast charging is also achieved.
The box can also do QC12V, but here the converter has some trouble with a 10ohm (1.2A @ 12V) load, maybe that is the reason it is not listed in the specifications. It maintains the voltage above 11V, this means it will work with most (if not all) devices requiring QC12V and not using more than 1.2A. It can even deliver 2A from one battery, but only for about 45 minutes. The output voltage is stable, there is no drop when the battery is nearly empty. In the end, it took about 2.5 hours to fully charge a mobile phone and a Kindle from a basic powerless state. The discharge efficiency of PB2S is good. At this time, the remaining power of two 21700 batteries is 20%. The voltage of both batteries is about 3.4V, which is balanced for two-slot discharge. From this, it can be judged that the PB2S discharge cut-off voltage is about 3V, which will not be over-discharged for lithium batteries, making discharge safety.
Preview
The XTAR PB2S is a portable battery charger with Power Bank function to recharge your mobile devices anywhere and anytime outdoors. The display is clean and easy to read, with shown internal battery charge, amps output, and voltage.