1- Does the battery charge will automatically stop when it is 100% completed? Or will it continue to charge after the charge is completed (then doing an overcharge, and damaging the battery)?
2- I got an AC charger to charge the sansa clip on a wall outlet. Will the recharge stops automatically too?
3- What is the charging time?
4- Will the charging time be the same with the AC charger then with the computer, or can it be faster?
Thank you very much for your answers. I can’t find them on the user manual and on the FAQ.
There is a microprocessor chip in the battery pack(as with most). It’s purpose is to regulate the the amount of juice coming into the battery. If this chip weren’t there, the battery would explode shortly after reaching full charge. When it reaches full charge the trickle charge is well below what the battery can safely dissipate as heat. The “damage” you refer to would be so small as to be nearly unmeasurable. There is a finite lifecycle to all battery packs. This “damage” will be very gradual and not present a problem until the warranty expires.(ha ha) Seriously, just enjoy the thing, charging is ■■■■■ proof. To get the max life out of it, don’t let it discharge below 18% if you can avoid it. That same microchip will shut the pack down to prevent complete discharge, which would do some real damage to the capacity. My laptop stays plugged in 24/7, I’ve had it for 3 years and when I do run off of battery power, I don’t notice any difference in runtime as when it was new. So don’t worry.
I’m confuse. You said that it’s a lithium ion (Li-ion) battery while others on this forum are saying that it’s a Lithium ion polymere (Li-po)…
A question to people from Sansa : Can you just give us these specifications since it is usually always given with this kind of product from other companies, and considering the fact that there are so many people on this forum who would want to know it!!??
What kind of battery? (Li-ion?, Li-po?)
How much mAh
How much voltage
etc.
Thank you
Message Edited by snorkyller on 01-04-2009 05:15 PM
With a Li-Po battery, the current dops continuously during the charge and become very small at the end of the charge. This small current shouldn’t be considered has a trickle charge. Then, a trickle charge is really not good for a Li-Po battery because a small current charge produce a plating of the battery’s electrode and shortened the battery lifetime. This is why Li-Po charging currents must be between C/3 and 1C.
Maybe drlucky is wrong and there no trickle charge, maybe he’s right and CrustyVet is wrong when he’s saying that trickle charge is safe.
I don’t believe that “charging is ■■■■■ proof” since, for example, we shouldn’t let the player discharge below 25% because it harms the battery. If it was really ■■■■■ proof, the player would stop at 25% instead of 0%
Theres no trickle charge. After the battery is topped off, the charge is halted.
If you unplug and replug the player from the AC it will attempt to charge if the voltage is dropped from Full. It will top off the battery as needed and shut off charging completely afterward.
At zero remaining charge there is a small margin left. If we stopped playing music at 25% your battery life would drop from 15 hours to 11 hours and nobody would like that.
I tend to see the 40% figure–but I don’t recall if that relates to the current battery technology in the Clip or earlier battery technology (I tend to aim at that level). batteryuniversity.com has good battery info.
For lithium batteries such as in the Clips, batteryuniversity.com says that random charging is fine–for storage, it recommends a 40% charge. It also states that partial charging is preferred, and that full discharges should be avoided.