Why your phone battery gets worse over time - George Zaidan

566,165 views ใƒป 2023-08-03

TED-Ed


ืื ื ืœื—ืฅ ืคืขืžื™ื™ื ืขืœ ื”ื›ืชื•ื‘ื™ื•ืช ื‘ืื ื’ืœื™ืช ืœืžื˜ื” ื›ื“ื™ ืœื”ืคืขื™ืœ ืืช ื”ืกืจื˜ื•ืŸ.

ืชืจื’ื•ื: zeeva livshitz ืขืจื™ื›ื”: Ido Dekkers
00:07
A drop of gasoline, a match, and a battery, all store energyโ€”
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ื˜ื™ืคืช ื‘ื ื–ื™ืŸ, ื’ืคืจื•ืจ, ื•ื‘ื˜ืจื™ื”, ื›ื•ืœื ืžืื›ืกื ื™ื ืื ืจื’ื™ื”-
00:12
but, after each expends its energy, only the battery is recyclable.
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ืื‘ืœ, ืœืื—ืจ ืฉื›ืœ ืื—ื“ ืžื•ืฆื™ื ืืช ื”ืื ืจื’ื™ื” ืฉืœื•, ืจืง ื”ืกื•ืœืœื” ื ื™ืชื ืช ืœืžื™ื—ื–ื•ืจ.
00:17
That's because, chemically speaking,
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ื–ืืช ืžื›ื™ื•ื•ืŸ ืฉืžื‘ื—ื™ื ื” ื›ื™ืžื™ืช,
00:19
a dead battery is actually not that different from a fresh one.
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ืกื•ืœืœื” ืžืชื” ืœืžืขืฉื” ืœื ื›ืœ ื›ืš ืฉื•ื ื” ืžืกื•ืœืœื” ื—ื“ืฉื”.
00:23
Most of the batteries we use today take advantage
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ืจื•ื‘ ื”ืกื•ืœืœื•ืช ื‘ื”ืŸ ืื ื—ื ื• ืžืฉืชืžืฉื™ื ื›ื™ื•ื ืžื ืฆืœื•ืช
00:25
of the fact that some metals like to release electrons
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ืืช ื”ืขื•ื‘ื“ื” ืฉื›ืžื” ืžืชื›ื•ืช ืื•ื”ื‘ื•ืช ืœืฉื—ืจืจ ืืœืงื˜ืจื•ื ื™ื
00:28
and others like to accept them.
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ื•ื›ืžื” ืื•ื”ื‘ื•ืช ืœืงื‘ืœ ืื•ืชื.
00:31
For example, in a typical alkaline double-A battery,
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ืœื“ื•ื’ืžื, ื‘ืกื•ืœืœืช ืืœืงืœื™ืŸ ื˜ื™ืคื•ืกื™ืช,
00:34
zinc metal reacts with hydroxide ions,
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ืžืชื›ืช ืื‘ืฅ ืžื’ื™ื‘ื” ืขื ื™ื•ื ื™ ื”ื™ื“ืจื•ืงืกื™ื“,
00:37
changing into zinc oxide and releasing electrons at the negative terminal.
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ื”ื•ืคื›ืช ืœืชื—ืžื•ืฆืช ืื‘ืฅ ื•ืžืฉื—ืจืจืช ืืœืงื˜ืจื•ื ื™ื ื‘ืžืกื•ืฃ ื”ืฉืœื™ืœื™.
00:42
The electrons travel through, say, a light bulb,
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ื”ืืœืงื˜ืจื•ื ื™ื ืขื•ื‘ืจื™ื ื“ืจืš, ื ื ื™ื—, ื ื•ืจื”,
00:45
and then return to the battery at the positive terminal,
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ื•ืื– ื—ื•ื–ืจื™ื ืœืกื•ืœืœื” ื‘ืžืกื•ืฃ ื”ื—ื™ื•ื‘ื™,
00:47
where theyโ€™re accepted by manganese dioxide.
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ืฉื ื”ื ืžืชืงื‘ืœื™ื ืขืœ ื™ื“ื™ ืžื ื’ืŸ ื“ื• ื—ืžืฆื ื™.
00:51
Different batteries use different combinations of metals,
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ืกื•ืœืœื•ืช ืฉื•ื ื•ืช ืžืฉืชืžืฉื•ืช ื‘ืฉื™ืœื•ื‘ื™ื ืฉื•ื ื™ื ืฉืœ ืžืชื›ื•ืช,
00:54
and sometimes non-metals like graphite,
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ื•ืœืขื™ืชื™ื ืœื ืžืชื›ื•ืช ื›ืžื• ื’ืจืคื™ื˜,
00:56
but the basic idea is to use a pair of chemical reactions
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ืื‘ืœ ื”ืจืขื™ื•ืŸ ื”ื‘ืกื™ืกื™ ื”ื•ื ืœื”ืฉืชืžืฉ ื‘ื–ื•ื’ ืชื’ื•ื‘ื•ืช ื›ื™ืžื™ื•ืช
00:59
to generate a stream of electrons.
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ื›ื“ื™ ืœื™ืฆื•ืจ ื–ืจื ืฉืœ ืืœืงื˜ืจื•ื ื™ื.
01:02
Almost all batteries, even single-use batteries,
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ื›ืžืขื˜ ื›ืœ ื”ืกื•ืœืœื•ืช, ืืคื™ืœื• ืกื•ืœืœื•ืช ื—ื“ ืคืขืžื™ื•ืช,
01:06
are theoretically rechargeable.
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ื ื™ืชื ื•ืช ืœื”ื˜ืขื ื” ื‘ืื•ืคืŸ ืชื™ืื•ืจื˜ื™.
01:08
That's because the metals and other chemicals are still right there.
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ื–ื” ืžื›ื™ื•ื•ืŸ ืฉื”ืžืชื›ื•ืช ื•ื”ื›ื™ืžื™ืงืœื™ื ื”ืื—ืจื™ื ืขื“ื™ื™ืŸ ื ืžืฆืื™ื ืฉื.
01:11
Thatโ€™s very different than in, say, gasoline,
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ื–ื” ืžืื•ื“ ืฉื•ื ื” ืžืืฉืจ, ืœืžืฉืœ, ื‘ื‘ื ื–ื™ืŸ,
01:14
where the liquid hydrocarbon molecules are converted to gases.
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ืฉื‘ื• ืžื•ืœืงื•ืœื•ืช ื”ืคื—ืžื™ืžื ื™ื ื”ื ื•ื–ืœื™ื•ืช ืžื•ืžืจื•ืช ืœื’ื–ื™ื.
01:18
You can't convert exhaust back into gasoline,
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ืืชื ืœื ื™ื›ื•ืœื™ื ืœื”ืžื™ืจ ืืช ื”ืคืœื™ื˜ื” ื‘ื—ื–ืจื” ืœื‘ื ื–ื™ืŸ,
01:21
but, with some work you can convert, say, zinc oxide back to zinc.
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ืื‘ืœ, ืขื ืงืฆืช ืขื‘ื•ื“ื” ืืชื ื™ื›ื•ืœื™ื ืœื”ืžื™ืจ, ืœืžืฉืœ, ืชื—ืžื•ืฆืช ืื‘ืฅ ื‘ื—ื–ืจื” ืœืื‘ืฅ.
01:26
So then what's the difference between these and these?
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ืื– ืžื” ื”ื”ื‘ื“ืœ ื‘ื™ืŸ ืืœื” ืœืืœื”?
01:31
The short answer is that trying to recharge a single-use battery
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ื”ืชืฉื•ื‘ื” ื”ืงืฆืจื” ื”ื™ื ืฉืœื ืกื•ืช ืœื”ื˜ืขื™ืŸ ืกื•ืœืœื” ื—ื“ ืคืขืžื™ืช
01:34
doesnโ€™t just force these reactions to run in reverse.
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ืœื ืจืง ืžืืœืฅ ืืช ื”ืชื’ื•ื‘ื•ืช ื”ืœืœื• ืœืคืขื•ืœ ื”ืคื•ืš.
01:38
It also results in a bunch of side reactions that produce
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ืืœื ื’ื ืžื‘ื™ื ืœื”ืžื•ืŸ ืชื’ื•ื‘ื•ืช ืœื•ื•ืื™ ืฉืžื™ื™ืฆืจื•ืช
01:41
useless contaminants,
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ืžื–ื”ืžื™ื ื—ืกืจื™ ืชื•ืขืœืช,
01:43
reducing a batteryโ€™s capacity;
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ื•ืžืงื˜ื™ื ื•ืช ืืช ื”ืงื™ื‘ื•ืœืช ืฉืœ ื”ืกื•ืœืœื”;
01:45
and it could even damage the internal structure of the battery,
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ื•ื–ื” ืืคื™ืœื• ืขืœื•ืœ ืœืคื’ื•ืข ื‘ืžื‘ื ื” ื”ืคื ื™ืžื™ ืฉืœ ื”ืกื•ืœืœื”,
01:48
leading to a loss of electrical contact and failure.
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ื•ืœื”ื•ื‘ื™ืœ ืœืื•ื‘ื“ืŸ ืžื’ืข ื—ืฉืžืœื™ ื•ืœื›ืฉืœ.
01:52
Rechargeable batteries are engineered to avoid these issues.
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ืกื•ืœืœื•ืช ื ื˜ืขื ื•ืช ืžืชื•ื›ื ื ื•ืช ื›ื“ื™ ืœืžื ื•ืข ื‘ืขื™ื•ืช ืืœื”.
01:56
Look at this lithium-ion battery.
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ื”ื‘ื™ื˜ื• ื‘ืกื•ืœืœืช ื”ืœื™ืชื™ื•ื-ื™ื•ืŸ ื”ื–ืืช.
01:58
Both sides have an atomic-level structure that you can imagine as lots of docks.
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ืœืฉื ื™ ื”ืฆื“ื“ื™ื ื™ืฉ ืžื‘ื ื” ืื˜ื•ืžื™ ืฉื ื™ืชืŸ ืœื“ืžื™ื™ืŸ ื›ืžื• ื”ืจื‘ื” ืจืฆื™ืคื™ื.
02:03
So when the battery is powering something,
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ืื– ื›ืฉื”ืกื•ืœืœื” ืžืคืขื™ืœื” ืžืฉื”ื•,
02:05
the lithium โ€œshipsโ€ give up their electrons to power the circuit,
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โ€œืกืคื™ื ื•ืชโ€ ื”ืœื™ืชื™ื•ื ืžื•ื•ืชืจื•ืช ืขืœ ื”ืืœืงื˜ืจื•ื ื™ื ืฉืœื”ืŸ ื›ื“ื™ ืœื”ืคืขื™ืœ ืืช ื”ืžืขื’ืœ,
02:08
and then sail over to the other side of the battery,
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ื•ืื– ืžืคืœื™ื’ื•ืช ืœืฆื“ ื”ืฉื ื™ ืฉืœ ื”ืกื•ืœืœื”,
02:11
dock in an orderly, organized way,
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ืขื•ื’ื ื•ืช ื‘ืฆื•ืจื” ืžืกื•ื“ืจืช ื•ืžืื•ืจื’ื ืช
02:13
and meet up with their now-lower-energy electrons.
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ื•ื ืคื’ืฉื•ืช ืขื ื”ืืœืงื˜ืจื•ื ื™ื ืฉืœื”ืŸ ืฉื”ืื ืจื’ื™ื” ืฉืœื”ื ื›ืขืช ื ืžื•ื›ื” ื™ื•ืชืจ.
02:18
When the battery is being charged, the opposite happens.
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ื›ืืฉืจ ื”ืกื•ืœืœื” ื ื˜ืขื ืช, ื”ื”ืคืš ืงื•ืจื”.
02:21
Over the course of hundreds, sometimes thousands, of charge cycles,
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ื‘ืžื”ืœืš ืžืื•ืช, ืœืคืขืžื™ื ืืœืคื™ ืžื—ื–ื•ืจื™ ื˜ืขื™ื ื”,
02:24
some of the lithium ion ships sort of veer off course
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ื—ืœืง ืžืกืคื™ื ื•ืช ื”ืœื™ืชื™ื•ื ื™ื•ืŸ ืกื•ื’ ืฉืœ ืกื•ื˜ื•ืช ืžื”ืžืกืœื•ืœ
02:28
and engage in side reactions,
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ื•ืขื•ืกืงื•ืช ื‘ืชื’ื•ื‘ื•ืช ืฆื“ื“ื™ื•ืช,
02:30
producing stuff that increases the internal resistance of the battery,
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ืžื™ื™ืฆืจื•ืช ื“ื‘ืจื™ื ืฉืžื’ื“ื™ืœื™ื ืืช ื”ื”ืชื ื’ื“ื•ืช ื”ืคื ื™ืžื™ืช ืฉืœ ื”ืกื•ืœืœื”,
02:34
which in turn makes it lose efficiency and power
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ืžื” ืฉื‘ืชื•ืจืŸ ื’ื•ืจืžื™ื ืœื” ืœื”ืคืกื™ื“ ื™ืขื™ืœื•ืช ื•ืขื•ืฆืžื”
02:37
until it inevitably dies.
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ืขื“ ืฉื”ื™ื ืžืชื” ื‘ืื•ืคืŸ ื‘ืœืชื™ ื ืžื ืข.
02:40
Even when that happens, you can bring dead batteries back to lifeโ€”
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ื’ื ื›ืฉื–ื” ืงื•ืจื”,ืืชื ื™ื›ื•ืœื™ื ืœื”ื—ื–ื™ืจ ืกื•ืœืœื•ืช ืžืชื•ืช ืœื—ื™ื™ื-
02:44
whether theyโ€™re rechargeable or notโ€” by recycling them.
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ื‘ื™ืŸ ืื ื”ืŸ ื ื˜ืขื ื•ืช ืื• ืœื -ืขืœ ื™ื“ื™ ืžื™ื—ื–ื•ืจืŸ.
02:47
The heart of most battery recycling is a process called smelting,
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ื”ืœื‘ ืฉืœ ืจื•ื‘ ืžื™ื—ื–ื•ืจ ื”ืกื•ืœืœื•ืช ื”ื•ื ืชื”ืœื™ืš ืฉื ืงืจื ื”ืชื›ื”,
02:51
which is basically just melting the metallic parts.
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ืฉื–ื” ื‘ืขืฆื ืจืง ื”ืžืกืช ื”ื—ืœืงื™ื ื”ืžืชื›ืชื™ื™ื.
02:54
This drives off impurities,
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ื–ื” ืžืจื—ื™ืง ื–ื™ื”ื•ืžื™ื,
02:56
returning metals back to their initial, orderly state.
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ื•ืžื—ื–ื™ืจ ืžืชื›ื•ืช ื—ื–ืจื” ืœืžืฆื‘ืŸ ื”ืจืืฉื•ื ื™ ื”ืžืกื•ื“ืจ,
02:59
Unfortunately, in many countries you canโ€™t just toss household batteries
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ืœืžืจื‘ื” ื”ืฆืขืจ, ื‘ืžื“ื™ื ื•ืช ืจื‘ื•ืช ืืชื ืœื ื™ื›ื•ืœื™ื ืคืฉื•ื˜ ืœื–ืจื•ืง ืกื•ืœืœื•ืช ื‘ื™ืชื™ื•ืช
03:03
in with your regular recycling.
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ืขื ื”ืžื™ื—ื–ื•ืจ ื”ืจื’ื™ืœ ืฉืœื›ื.
03:05
You have to take them to a battery collection point or recycling center.
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ืืชื ืฆืจื™ื›ื™ื ืœืงื—ืช ืื•ืชืŸ ืœื ืงื•ื“ืช ืื™ืกื•ืฃ ืกื•ืœืœื•ืช ืื• ืœืžืจื›ื– ืžื™ื—ื–ื•ืจ.
03:09
Same goes for more complicated rechargeable batteries:
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ื›ื "ืœ ืœื’ื‘ื™ ืกื•ืœืœื•ืช ื ื˜ืขื ื•ืช, ื™ื•ืชืจ ืžืกื•ื‘ื›ื•ืช:
03:12
you need to bring them to a collection point
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ืืชื ืฆืจื™ื›ื™ื ืœื”ื‘ื™ื ืื•ืชืŸ ืœื ืงื•ื“ืช ืื™ืกื•ืฃ
03:14
or send them back to the company you bought them from.
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ืื• ืœืฉืœื•ื— ืื•ืชืŸ ื‘ื—ื–ืจื” ืœื—ื‘ืจื” ืฉืงื ื™ืชื ืžืžื ื”.
03:16
Itโ€™s a pain, but absolutely worth the time and effort,
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ื–ื• ื˜ืจื—ื”, ืื‘ืœ ื‘ื”ื—ืœื˜ ืฉื•ื•ื” ืืช ื”ื–ืžืŸ ื•ื”ืžืืžืฅ,
03:19
because recycling batteries is critical.
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ื›ื™ ืžื™ื—ื–ื•ืจ ืกื•ืœืœื•ืช ื”ื•ื ื—ื™ื•ื ื™.
03:22
Not only does it prevent potentially toxic battery metals
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ืœื ืจืง ืฉื–ื” ืžื•ื ืข ืžืžืชื›ื•ืช ืกื•ืœืœื” ืฉืขืœื•ืœื•ืช ืœื”ื™ื•ืช ืจืขื™ืœื•ืช
03:25
from leaking into the environment,
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ื“ืœื™ืคื” ืœืกื‘ื™ื‘ื”,
03:26
it conserves scarceโ€” and vitalโ€” resources.
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ื”ื•ื ืฉื•ืžืจ ืขืœ ืžืฉืื‘ื™ื ื ื“ื™ืจื™ื ื•ื—ื™ื•ื ื™ื™ื.
03:30
Earth has about 22 million tons of lithiumโ€”
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ืœื›ื“ื•ืจ ื”ืืจืฅ ื™ืฉ ื›-22 ืžื™ืœื™ื•ืŸ ื˜ื•ืŸ ืฉืœ ืœื™ืชื™ื•ื-
03:33
enough for about 2.5 billion EVs.
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ืžืกืคื™ืง ืœื›-2.5 ืžื™ืœื™ืืจื“ ืžื›ื•ื ื™ื•ืช ื—ืฉืžืœื™ื•ืช.
03:36
That sounds like plenty, but itโ€™s only 25% higher than the number of EVs
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ื–ื” ื ืฉืžืข ื›ืžื• ื”ืจื‘ื”, ืื‘ืœ ื–ื” ืจืง ื’ื‘ื•ื” ื‘-25% ืžืžืกืคืจ ื”ื”ืžื›ื•ื ื™ื•ืช ื”ื—ืฉืžืœื™ื•ืช
03:40
experts believe itโ€™ll take to reach net zero emissions by 2050,
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ืฉืžื•ืžื—ื™ื ืžืืžื™ื ื™ื ืฉื™ื™ื“ืจืฉ ืœื”ื’ื™ืข ืœืืคืก ืคืœื™ื˜ื•ืช ื ื˜ื• ืขื“ 2050,
03:44
and that doesnโ€™t even account for laptops, phones, and anything else
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ื•ื–ื” ืืคื™ืœื• ืœื ืžืชื™ื™ื—ืก ืœืžื—ืฉื‘ื™ื ื ื™ื™ื“ื™ื, ื˜ืœืคื•ื ื™ื ื•ื›ืœ ื“ื‘ืจ ืื—ืจ
03:48
that uses a lithium-ion battery.
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ืฉืžืฉืชืžืฉื™ื ื‘ืกื•ืœืœืช ืœื™ืชื™ื•ื-ื™ื•ืŸ.
03:50
Currently, though, most lithium-ion batteries are not manufactured
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ื ื›ื•ืŸ ืœืขื›ืฉื™ื•, ืจื•ื‘ ืกื•ืœืœื•ืช ื”ืœื™ืชื™ื•ื-ื™ื•ืŸ ืื™ื ืŸ ืžื™ื•ืฆืจื•ืช
03:54
with recycling in mind.
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ืžืชื•ืš ืžื—ืฉื‘ื” ืขืœ ืžื™ื—ื–ื•ืจ.
03:55
The designs are intricate and non-standard,
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ื”ืขื™ืฆื•ื‘ื™ื ืžื•ืจื›ื‘ื™ื ื•ืœื ืกื˜ื ื“ืจื˜ื™ื™ื,
03:58
and the components are held together by almost indestructible glues.
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ื•ื”ืจื›ื™ื‘ื™ื ืžื•ื—ื–ืงื™ื ื™ื—ื“ ืขืœ ื™ื“ื™ ื“ื‘ืงื™ื ื›ืžืขื˜ ื‘ืœืชื™ ื ื™ืชื ื™ื ืœื”ืจื™ืกื”.
04:02
So today, less than 5% of lithium-ion batteries are recycled.
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ืื– ื”ื™ื•ื, ืคื—ื•ืช ืž-5% ืžืกื•ืœืœื•ืช ื”ืœื™ืชื™ื•ื-ื™ื•ืŸ ืžืžื•ื—ื–ืจื•ืช.
04:07
Regulations that clearly define who is responsible for a spent battery
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ืชืงื ื•ืช ืฉืžื’ื“ื™ืจื•ืช ื‘ืฆื•ืจื” ื‘ืจื•ืจื” ืžื™ ืื—ืจืื™ ืœืกื•ืœืœื” ืฉื”ืชืจื•ืงื ื”
04:11
and what should happen to it can boost recycling dramatically.
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ื•ืžื” ืฆืจื™ืš ืœืงืจื•ืช ืœื” ื™ื›ื•ืœื•ืช ืœื”ื’ื‘ื™ืจ ืืช ื”ืžื™ื—ื–ื•ืจ ื‘ืื•ืคืŸ ื“ืจืžื˜ื™.
04:15
For example, lead-acid batteries are generally subject to stringent regulations
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ืœื“ื•ื’ืžื”, ืกื•ืœืœื•ืช ืชื—ืžื•ืฆืช ืขื•ืคืจืช ื‘ื“ืจืš ื›ืœืœ ื›ืคื•ืคื•ืช ืœืชืงื ื•ืช ืžื—ืžื™ืจื•ืช
04:20
and are recycled at much higher rates than lithium-ion batteries.
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ื•ืžืžื•ื—ื–ืจื•ืช ื‘ืฉื™ืขื•ืจื™ื ื”ืจื‘ื” ื™ื•ืชืจ ื’ื‘ื•ื”ื™ื ืžืืฉืจ ืกื•ืœืœื•ืช ืœื™ืชื™ื•ื-ื™ื•ืŸ.
04:25
Over the next century, weโ€™ll need to recycle huge numbers of EV batteries,
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ื‘ืžื”ืœืš ื”ืžืื” ื”ื‘ืื”, ื ืฆื˜ืจืš ืœืžื—ื–ืจ ืžืกืคืจ ืขืฆื•ื ืฉืœ ืกื•ืœืœื•ืช ืžื›ื•ื ื™ื•ืช ื—ืฉืžืœื™ื•ืช,
04:29
so scientists are working on making the battery recycling process cheaper
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ืื– ืžื“ืขื ื™ื ืขื•ื‘ื“ื™ื ืขืœ ื™ืฆื™ืจืช ืชื”ืœื™ืš ืžื™ื—ื–ื•ืจ ืกื•ืœืœื” ื–ื•ืœ ื™ื•ืชืจ
04:33
and more environmentally friendly.
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ื•ื™ื“ื™ื“ื•ืชื™ ื™ื•ืชืจ ืœืกื‘ื™ื‘ื”.
04:35
Smelting uses a lot of energy and, depending on the type of battery,
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ื”ืชื›ื” ื“ื•ืจืฉืช ื”ืจื‘ื” ืื ืจื’ื™ื” ื•ืชืœื•ื™ ื‘ืกื•ื’ ื”ืกื•ืœืœื”,
04:38
can release harmful by-products.
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ื™ื›ื•ืœื” ืœืฉื—ืจืจ ืชื•ืฆืจื™ ืœื•ื•ืื™ ืžื–ื™ืงื™ื.
04:41
In addition to regulations, industrial processes, and our own individual choices,
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ื‘ื ื•ืกืฃ ืœืชืงื ื•ืช, ืชื”ืœื™ื›ื™ื ืชืขืฉื™ื™ืชื™ื™ื ื•ื”ื‘ื—ื™ืจื•ืช ื”ืื™ืฉื™ื•ืช ืฉืœื ื•,
04:45
battery tech will also continue to evolve.
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ื’ื ื˜ื›ื ื•ืœื•ื’ื™ื™ืช ื”ืกื•ืœืœื•ืช ืชืžืฉื™ืš ืœื”ืชืคืชื—.
04:48
There are proof-of-concept batteries being developed that can convert
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ื™ืฉ ืกื•ืœืœื•ืช ื”ื•ื›ื—ืช ื™ื›ื•ืœืช ืฉืžืคื•ืชื—ื•ืช ืฉื™ื›ื•ืœื•ืช ืœื”ืžื™ืจ
04:51
physical force, ambient sound, and even pee into electricity.
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ื›ื•ื— ืคื™ื–ื™, ืฆืœื™ืœ ืกื‘ื™ื‘ืชื™, ื•ืืคื™ืœื• ืฉืชืŸ ืœื—ืฉืžืœ.
04:57
But if your top priority is to make your number one source of power, number one,
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ืื‘ืœ ืื ื”ืขื“ื™ืคื•ืช ื”ืขืœื™ื•ื ื” ืฉืœื›ื ื”ื™ื ืœื”ืคื•ืš ืืช ืžืงื•ืจ ื”ื›ื•ื— ืžืกืคืจ ืื—ื“ ืฉืœื›ื , ืœืžืกืคืจ ืื—ื“,
05:01
sorry to say, but urine for a long wait.
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ืžืฆื˜ืขืจ ืœื•ืžืจ, ืื‘ืœ ืฉืชืŸ ืœื”ืžืชื ื” ืืจื•ื›ื”.
ืขืœ ืืชืจ ื–ื”

ืืชืจ ื–ื” ื™ืฆื™ื’ ื‘ืคื ื™ื›ื ืกืจื˜ื•ื ื™ YouTube ื”ืžื•ืขื™ืœื™ื ืœืœื™ืžื•ื“ ืื ื’ืœื™ืช. ืชื•ื›ืœื• ืœืจืื•ืช ืฉื™ืขื•ืจื™ ืื ื’ืœื™ืช ื”ืžื•ืขื‘ืจื™ื ืขืœ ื™ื“ื™ ืžื•ืจื™ื ืžื”ืฉื•ืจื” ื”ืจืืฉื•ื ื” ืžืจื—ื‘ื™ ื”ืขื•ืœื. ืœื—ืฅ ืคืขืžื™ื™ื ืขืœ ื”ื›ืชื•ื‘ื™ื•ืช ื‘ืื ื’ืœื™ืช ื”ืžื•ืฆื’ื•ืช ื‘ื›ืœ ื“ืฃ ื•ื™ื“ืื• ื›ื“ื™ ืœื”ืคืขื™ืœ ืืช ื”ืกืจื˜ื•ืŸ ืžืฉื. ื”ื›ืชื•ื‘ื™ื•ืช ื’ื•ืœืœื•ืช ื‘ืกื ื›ืจื•ืŸ ืขื ื”ืคืขืœืช ื”ื•ื•ื™ื“ืื•. ืื ื™ืฉ ืœืš ื”ืขืจื•ืช ืื• ื‘ืงืฉื•ืช, ืื ื ืฆื•ืจ ืื™ืชื ื• ืงืฉืจ ื‘ืืžืฆืขื•ืช ื˜ื•ืคืก ื™ืฆื™ืจืช ืงืฉืจ ื–ื”.

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