i do alot of snowboarding, which typically involves alot of battery being used for my headphones/ internet radio and gps trail maps. there are also alot of situations where i am not able to have access to an outlet when needed. the one s has fairly decent battery life for a smart phone, but lets be honest, smart phone batteries suck. rather then mess with roms and optimizing battery life to squeeze an extra hour or 2 of usage i decided to just grab an external battery. i also dont like having much bulk in my pocket so i wanted something slim that was close to the same dimensions as the one s.
what i bought is the ultra slim touch control 4000mah mobile charger by power rover off of ebay for $39.99. its roughly the same width and thickness as the one s and is about 1.5cm shorter ( 65X115.5X7.5mm). its also constructed of aluminum so it matches the phone well. its got a nice heavy weight and feels solid and not cheap in any way. it has a similar feel and shape of an ipod classic.
the charger uses the same micro usb as the one s for charging, then it uses a standard usb port for the power output. the charger comes with a small usb to micro usb cable roughly 6" or 8" long, and also comes with a few adapters for different charging ports. the great thing about the included cable is that it can be used to charge the charger, then flipped into the outlet port and plugged directly into the one s so you shouldnt need to mess with multiple cables. i wouldnt say the cable is very high quality but should get the job done for a while.
ive now had some time to play with it an get an idea of the performance. the charger will fully charge in about 4 hours, and charges the one s in a similar amount of time as using the usb adapter. after completely draining my phone to the point where it wont power on anymore then plugging in the charger i was able to get 1.56 charges with practically zero use on the phone. in real world terms id bet you could get a full charge and a little more if you had heavy usage while charging. im a little disappointed as i was hoping for 2 full charges but its still completely usable. i dont have any other experience with portable chargers so i cant really compare its claimed output and real world figures. another small problem is the battery status is completely inaccurate. the charger drained to "25%" within 45minutes of charging, however that last 25% was able to finish off that charge, then charge a 2nd time to 56% so should be taken with a grain of salt.
with the phone stacked ontop of the charger its approximately 5/8" thick, and with it stacked using my distronic case its about 3/4". not exactly thin but pretty impressive considering it can extend your use about 1.5 times and your average cell phone was that thick (or larger) not to long ago.
im not sure if im allowed to post ebay links here but it can be found fairly easily.
to sum up
great build quality
solid feel
inaccurate battery display
decent performance
what i bought is the ultra slim touch control 4000mah mobile charger by power rover off of ebay for $39.99. its roughly the same width and thickness as the one s and is about 1.5cm shorter ( 65X115.5X7.5mm). its also constructed of aluminum so it matches the phone well. its got a nice heavy weight and feels solid and not cheap in any way. it has a similar feel and shape of an ipod classic.
the charger uses the same micro usb as the one s for charging, then it uses a standard usb port for the power output. the charger comes with a small usb to micro usb cable roughly 6" or 8" long, and also comes with a few adapters for different charging ports. the great thing about the included cable is that it can be used to charge the charger, then flipped into the outlet port and plugged directly into the one s so you shouldnt need to mess with multiple cables. i wouldnt say the cable is very high quality but should get the job done for a while.
ive now had some time to play with it an get an idea of the performance. the charger will fully charge in about 4 hours, and charges the one s in a similar amount of time as using the usb adapter. after completely draining my phone to the point where it wont power on anymore then plugging in the charger i was able to get 1.56 charges with practically zero use on the phone. in real world terms id bet you could get a full charge and a little more if you had heavy usage while charging. im a little disappointed as i was hoping for 2 full charges but its still completely usable. i dont have any other experience with portable chargers so i cant really compare its claimed output and real world figures. another small problem is the battery status is completely inaccurate. the charger drained to "25%" within 45minutes of charging, however that last 25% was able to finish off that charge, then charge a 2nd time to 56% so should be taken with a grain of salt.
with the phone stacked ontop of the charger its approximately 5/8" thick, and with it stacked using my distronic case its about 3/4". not exactly thin but pretty impressive considering it can extend your use about 1.5 times and your average cell phone was that thick (or larger) not to long ago.
im not sure if im allowed to post ebay links here but it can be found fairly easily.
to sum up
great build quality
solid feel
inaccurate battery display
decent performance
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