Powerbank for s4?

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Hello all,
Would like to get a power bank for my s4, any recommendations? Looking for one that can support maybe 3 full charges.

Thanks
 

tokyofanboi

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7000 can charge 3 times? wow that's pretty efficient. how long does it take to charge fully though? (the powerbank itself)

Never really when to time. Estimate 4+ hrs ba. If not can also consider the 12000 series but imo prefer the 7000 as the micro cable is build in the device itself
 
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Never really when to time. Estimate 4+ hrs ba. If not can also consider the 12000 series but imo prefer the 7000 as the micro cable is build in the device itself

i pm-ed the guy selling the new trent 7000 on the MO and he said the s4 can only achieve a 1.8x charge with it :eek:
 

Apparatus

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May be you should try out the Red Monster Gangnam Power 18000 mah at Challenger for $199
 

tokyofanboi

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i pm-ed the guy selling the new trent 7000 on the MO and he said the s4 can only achieve a 1.8x charge with it :eek:

cannot be 1.8x. as i use it entire day photo and video shooting from 11am till 8pm that's 10hrs straight, before i use the external batt i check and is at 25%, charge it to 95% to 99% and abuse it again. So i'm very sure can charge around 3 times full charge
 

kEvinErd

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Why use power bank when there's a removable battery ..? Unless you're gonna use the power bank to charge other devices as well?
 

Apparatus

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RE

S4 battery is 2600mAh, 7000mAh should be at least 2.6 times

In theory only.

A good battery should have a power efficiency of about 70%. So, the actual output of the New Trent battery is 7000x0.7 = 4900 mAh

and that would charge the S4 for 4900/2600 = 1.88 times

Note : - Thats for a good battery. For those lousy ones the power efficiency will be less

Read the evaluation review of battery banks here

http://forums.asiaone.com/showthread.php?t=59615

:D
 
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Apparatus

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ReRE

cannot be 1.8x. as i use it entire day photo and video shooting from 11am till 8pm that's 10hrs straight, before i use the external batt i check and is at 25%, charge it to 95% to 99% and abuse it again. So i'm very sure can charge around 3 times full charge

If you drain your S4 to less than 5% say 3 - 4 % then charge it to full. You'll find your TRENT battery can only achieve 1.89 times

Read the evaluation review of battery banks here

Evaluation review of 5V battery banks - 11000mAH, 20000mAh & 30000mAh - AsiaOne Forum

:D
 
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kEvinErd

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yes may be charging ipod as well...
but how much does a spare s4 battery cost?

Think official battery is 48 bucks. Instant full battery and don't need to lug a portable charger around attached to the phone. It's one of the plus points for owning a Samsung phone. Embrace it! Hahaha
 
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Think official battery is 48 bucks. Instant full battery and don't need to lug a portable charger around attached to the phone. It's one of the plus points for owning a Samsung phone. Embrace it! Hahaha

true. anyway there is a battery that comes along with the charger by samsung, any idea how much that is retailing for?
http://www.samsung.com/us/mobile/cell-phones-accessories/EB-K600BUWESTA

checked up some batteries by anker/onite on amazon, 2 batteries+battery charger only 20 usd, but i probably need to engage a forwarding service as amazon does not ship to singapore. any cheap and reliable forwarding service available?

alternative would be to get those cheap ones on qoo10, but not sure if they are reliable or safe lol
 
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Pathfinder

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true. anyway there is a battery that comes along with the charger by samsung, any idea how much that is retailing for?
Galaxy S 4 Spare Battery Charging System

checked up some batteries by anker/onite on amazon, 2 batteries+battery charger only 20 usd, but i probably need to engage a forwarding service as amazon does not ship to singapore. any cheap and reliable forwarding service available?

alternative would be to get those cheap ones on qoo10, but not sure if they are reliable or safe lol

There's a guy selling Anker batteries here by the nick of trust_me or something like that.
 
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