Some users suspected mobile power capacity, will not explode, in fact, would not explode capacity size with no direct relationship only with the protection of a relationship is perfect, protecting thoughtful, large capacity and then nothing would happen, protection is not good, the capacity re-small battery will explode. In addition, the polymer lithium battery is placed in the fire burning just take gas only, not explode.
Price is also the focus of attention, the same capacity mobile power, and some sell very expensive, some very cheap, mobile power capacity is only one of the parameters, the quality of batteries used, the internal circuit chips used are also very key. Use of international brands of batteries: If SONY, ATL, SANYO and other costs are much higher; Then there are the internal circuitry, mobile power consumption is limited, in charge of the high cost of land use becomes. Currently undoubtedly boost the most efficient way of synchronous rectifier, boost efficiency up to 97%, on average, 94%, non-synchronous rectification most efficient booster circuit is generally about 88%, the average is about 75%, the synchronous rectifier output The stability is relatively much higher, but the synchronous boost program costs than non-synchronous boost to a few times, so the market price is relatively high. In addition, the mobile power will also increase the brand value price gap.
Some people worry that using a mobile phone charging power to charge the phone or bad, this generally will not, 5V for charging mobile phones and other digital devices designed for mobile power supply output voltages are within the standard range, design, material issues in the case without charge effect with the original charge, computer USB interface is the same, there is no charge a bad case of mobile phones. However, as the market moves on the poor power quality doped missing, the output voltage, the current instability, there will likely burn out the motherboard, so try to use the big brands conditional mobile power, and not just look at price.
Buy mobile power when it is not the capacity the better? In fact, this depends on the individual's needs, to meet the needs in the case of relatively small capacity portable, after all, is not much of a breakthrough battery technology, to improve the capacity of the battery is only heap, so the volume will go up.
There is also the capacity to use similar mobile power vary greatly in doubt, this general information may vacuity, some mobile power supply on the market only spent two do not know 18650 parallel to the nominal 24000maH, currently the highest capacity 18650 should be Panasonic and Samsung 2900maH 2900maH, even if the use of these two batteries, the capacity but also 5800maH. In addition to virtual standard capacity, there is a problem on the first one mentioned in the boost circuit efficiency.
Select Move power, is the choice of lithium-ion batteries or lithium polymer batteries, polymer in this regard is of course good, but safe to mobile power battery protection is mainly to see whether the improvement, protection well, as safe. However, lithium polymer batteries do not explode, relative level of protection.
Want to maximize the use of the hands of mobile power electricity to charge the phone
First, choose a lower output voltage mobile power, many mobile phones (Nokia, except) Input voltage 4.5V-5.4V in the normal charge, why does the output voltage low energy efficiency: Mobile power supply output voltage - charge management circuit regulates voltage = phone battery voltage, we can see from the above, the lower the output voltage, the battery voltage is higher, the charge management circuit consumes less power, for example mobile power output 5.4V, the battery voltage is 3.8V, the charging current is 800ma , then the charge management circuit consumes electricity is: (5.4-3.8) × 0.8 = 1.28W, which is more than 1W of power wasted as heat, so the same efficiency in the same capacity mobile power, the output voltage can be lower mobile phone battery provides power to the more; Then try not to wait until the phone battery drained before charging.
Secondly, try to use good quality cell phone batteries: Why do you say, because those who will have the battery internal resistance, good battery internal resistance is much smaller, the resistance is equivalent to a resistor string inside the phone, the charging time This greater the resistance, the more energy consumed, which electrical energy is transformed into heat. Charging the battery died when we touch the phone's back cover should be easy to understand.