04-14-2012 11:23 PM
I'm thinking of getting a y470p because I'd like to be able to do some gaming, but not too much. I would mostly use my laptop for college. Integrated 3000 won't cut it for any games I'd like to play.
I see the battery life is listed as 4 hours for the y470p. But what if I use the switch to turn off the AMD Radeon card?
I talked to a sales rep for lenovo and he said I'd get 6-7 hours if I do that, but he can't provide me with any proof. Everywhere I look for reviews, I only see 4 hours. Even for the y470 which has a lower graphics card and is out of stock is listed as 4 hours. Heck, the z470 only lists 4.5 and that's integrated.
So, what is the deal? Will I really get 6-7 hours if I shut the card, or will I get 4 (most likely 2 the way laptop companies "test" their batteries?
04-15-2012 02:34 AM
04-15-2012 09:21 AM
04-15-2012 09:25 AM
04-15-2012 11:12 AM
please have a look at these Y470p reviews, battery life looks like 5 to 7 hours...
04-15-2012 11:25 AM
When you buy a new car, do you really believe the sticker that says how many miles per gallon you will get?
There is no way anyone can tell you, how many hours of battery life you should expect, under any given configuration. Plus, if the battery life is the ONLY reason you will any particular machine, you "should" just buy a secondary battery on your order. Batteries are not that expensive, and you will have that "dead battery anxiety" put to rest.
I have the Y470, (not the P). The battery is a 5.8 WH. However, my processor is the i7. I think you only get the 5.8 WH battery for the i7. If you get a i5 and below, the battery is only the 4.8 WH, but don't quote me on this. I could be wrong. I always (90% of the time) run my machine plugged in, so I can't tell you what the actual battery run time is. Also, I keep the battery charge at 46%, for "best battery health".
04-15-2012 12:01 PM
my Y560p Battery has a capacity of 57.7 Wh (5.2 Ah x 11.1 V) and I believe
most laptop battery packs have a capacity of around 40 to 70 Wh.
I fear your Y470 reports a wrong Wh value as seen from Y570 models before.
04-15-2012 12:46 PM - edited 04-15-2012 01:03 PM
Thanks. Yeah, I believe I put a period (.) in error. It should have been just 58 period.
I was using the information from my LTT toolbox. (Isn't that redundant?)
The HWiNFO64 has it in mWh, which more closely reflects the true capacity.
By the way. You'll notice that I currently have a full charge. This is due to all the storms moving through the mid-west. I don't want to be caught with no electricity, should a power line go down.
Edit: I still think if you order the i5, you'll only get a 48 whatever, battery. Can anyone confirm this?
04-15-2012 01:27 PM
it looks like all Y470/Y570 models give false readings of battery capacity to System Information software,
just another but harmless bug.
Fortunately the correct data is printed on the battery pack itself.
I hope you are save from the storms, take care... Zehn
04-15-2012 03:45 PM
I just remembered, I posted something like this on the NBR site:
My Y470 I7 shipped with a PABAS024 rated at 10.8 V, 5.4 Ah (taken off the sticker on the battery).
So according to this formula:
"Battery capacity can also be measured in Watt-Hours. Watt-Hours are calculated by multiplying Volts x Milliamperes. Here is an example:
14.8 Volts X 4060mAh
Is also equivalent to:
14.8 x 4.06 = 60.09 Watt-Hours"
So my Y470 battery is a "58" (10.8 Volts X 5.4 Amp Hours = 58.32 Watt-Hours)
I hope this helps clarify the situation.