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Would you like to inspect the original subtitles? These are the user uploaded subtitles that are being translated: 1 00:00:00,140 --> 00:00:02,640 Sometimes instead of being 2 00:00:02,640 --> 00:00:04,905 plugged into a power outlet all the time, 3 00:00:04,905 --> 00:00:07,125 we want to take our technology with us. 4 00:00:07,125 --> 00:00:09,870 Mobile technology uses rechargeable batteries to 5 00:00:09,870 --> 00:00:12,630 carry power with the device wherever we take it. 6 00:00:12,630 --> 00:00:14,430 Rechargeable devices might have 7 00:00:14,430 --> 00:00:17,145 an external charger for removable batteries, 8 00:00:17,145 --> 00:00:21,075 or might have a cradle stand or wireless charger. 9 00:00:21,075 --> 00:00:23,970 Look at this phone, we can top up the battery just by 10 00:00:23,970 --> 00:00:26,790 laying it on this wireless inductive charging pad. 11 00:00:26,790 --> 00:00:30,315 Isn't that cool? It's also pretty clever technology. 12 00:00:30,315 --> 00:00:33,045 Rechargeable batteries have a limited lifespan, 13 00:00:33,045 --> 00:00:35,190 which is measured in charge cycles. 14 00:00:35,190 --> 00:00:36,570 A charge cycle is 15 00:00:36,570 --> 00:00:39,590 one full charge and discharge of a battery. 16 00:00:39,590 --> 00:00:42,199 When a battery is reaching the end of its lifespan, 17 00:00:42,199 --> 00:00:44,480 it may take longer to charge and 18 00:00:44,480 --> 00:00:46,870 might not hold as much charge as when it was new. 19 00:00:46,870 --> 00:00:50,330 For some devices, you compare the current cycle count of 20 00:00:50,330 --> 00:00:51,920 your battery with the rate at 21 00:00:51,920 --> 00:00:53,795 cycle count of that battery type, 22 00:00:53,795 --> 00:00:56,135 to see how much more life to expect out of it. 23 00:00:56,135 --> 00:00:57,980 You need an external power source 24 00:00:57,980 --> 00:00:59,630 to add power to a battery. 25 00:00:59,630 --> 00:01:01,715 This could come from a wall outlet, 26 00:01:01,715 --> 00:01:04,300 another battery, or even a solar panel. 27 00:01:04,300 --> 00:01:07,100 You also need a charging circuit that manages 28 00:01:07,100 --> 00:01:08,660 the power transfer from 29 00:01:08,660 --> 00:01:11,765 the external power source to the rechargeable battery. 30 00:01:11,765 --> 00:01:13,625 This circuit works a lot like 31 00:01:13,625 --> 00:01:17,495 a power supply unit or PSU that we looked at earlier. 32 00:01:17,495 --> 00:01:19,670 It makes sure the input power is 33 00:01:19,670 --> 00:01:22,130 converted to the correct output power. 34 00:01:22,130 --> 00:01:24,575 Instead of using a large PSU, 35 00:01:24,575 --> 00:01:28,670 rechargeable devices use more portable power adapters, 36 00:01:28,670 --> 00:01:30,860 power supplies or chargers. 37 00:01:30,860 --> 00:01:32,900 A portable power supply powers 38 00:01:32,900 --> 00:01:35,230 the device while also charging the battery. 39 00:01:35,230 --> 00:01:36,860 This might sound obvious, 40 00:01:36,860 --> 00:01:38,300 but you need to make sure that you use 41 00:01:38,300 --> 00:01:40,765 the right charger for the right device. 42 00:01:40,765 --> 00:01:44,570 Mismatching chargers to devices can damage the battery, 43 00:01:44,570 --> 00:01:46,595 the device and the charger. 44 00:01:46,595 --> 00:01:50,555 A lot of chargers and power supplies use USB connectors, 45 00:01:50,555 --> 00:01:53,590 but you'll see a wide variety of charging connectors. 46 00:01:53,590 --> 00:01:55,700 Rechargeable batteries can be damaged by 47 00:01:55,700 --> 00:01:58,400 very cold or very hot environments. 48 00:01:58,400 --> 00:02:01,640 Don't charge or discharge rechargeable batteries unless 49 00:02:01,640 --> 00:02:05,260 they're within their safe operating temperature range. 50 00:02:05,260 --> 00:02:07,970 Its not just that a damaged rechargeable battery 51 00:02:07,970 --> 00:02:09,290 might not perform well, 52 00:02:09,290 --> 00:02:11,225 it can also be very dangerous. 53 00:02:11,225 --> 00:02:13,295 Batteries can swell, rupture, 54 00:02:13,295 --> 00:02:15,175 and sometimes even catch fire. 55 00:02:15,175 --> 00:02:17,550 Before working with a damaged battery, 56 00:02:17,550 --> 00:02:19,530 you should know how to safely handle it. 57 00:02:19,530 --> 00:02:21,650 When a battery reaches the end of its life, 58 00:02:21,650 --> 00:02:22,985 you'll need to replace it. 59 00:02:22,985 --> 00:02:25,250 Some devices will slow themselves down when 60 00:02:25,250 --> 00:02:28,550 a battery is getting old to make the battery last longer. 61 00:02:28,550 --> 00:02:30,650 If your device is running much slower than 62 00:02:30,650 --> 00:02:33,220 usual or shutting down unexpectedly, 63 00:02:33,220 --> 00:02:35,915 one thing to check is the battery life. 64 00:02:35,915 --> 00:02:37,930 Some devices have batteries that are 65 00:02:37,930 --> 00:02:40,270 designed to be replaced by the end-user. 66 00:02:40,270 --> 00:02:41,830 Other devices have batteries 67 00:02:41,830 --> 00:02:43,300 that are very difficult to replace, 68 00:02:43,300 --> 00:02:45,655 like small laptops and mobile devices. 69 00:02:45,655 --> 00:02:47,455 As an IT support specialist, 70 00:02:47,455 --> 00:02:49,390 you might receive special training on how to 71 00:02:49,390 --> 00:02:52,045 replace batteries and devices that you support. 72 00:02:52,045 --> 00:02:55,150 Or you might be the person sending the device out for 73 00:02:55,150 --> 00:02:56,830 battery replacement and then 74 00:02:56,830 --> 00:02:59,090 returning the device to the end-user. 75 00:02:59,090 --> 00:03:01,480 IT support specialist often have to 76 00:03:01,480 --> 00:03:04,285 troubleshoot battery life and device charging. 77 00:03:04,285 --> 00:03:06,445 The first step is to make sure the charger, 78 00:03:06,445 --> 00:03:08,050 the battery and the device are 79 00:03:08,050 --> 00:03:10,070 all designed to work with each other. 80 00:03:10,070 --> 00:03:12,850 We'll talk about sending out devices for repair and 81 00:03:12,850 --> 00:03:16,405 troubleshooting skills in future videos, so stay tuned. 82 00:03:16,405 --> 00:03:18,479 For iOS and Android, 83 00:03:18,479 --> 00:03:20,480 there are also some things that you could do to make 84 00:03:20,480 --> 00:03:22,580 the battery last as long as possible. 85 00:03:22,580 --> 00:03:24,230 It's a good idea for you to be 86 00:03:24,230 --> 00:03:26,495 familiar with these things so that you can help 87 00:03:26,495 --> 00:03:28,880 educate end-users on the best ways 88 00:03:28,880 --> 00:03:32,010 to get the most out of their mobile devices. 6969

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