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01-23-2014

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Rapid Charge

2014-01-23, 4:26 AM
Hi guys, I would like to ask, will the longevity of my battery increase if I were to consistently use the 45W adapter as opposed to the 65W (Rapid Charge)?
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1091 Posts

09-24-2013

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Re: Rapid Charge

2014-01-23, 11:48 AM

Hi,

 

Welcome to Lenovo Community Forums!

 

The main enemies of battery longevity are age, the number of charge cycles and high temperature. If you use a 45W adapter instead of 65W, the battery will probably last longer because less heat is produced when the battery is slowly charged. Note that a 45W adapter will take more time to charge the battery to 100%.

 

Best regards,

Mithun.



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4 Posts

01-23-2014

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Re: Rapid Charge

2014-01-23, 14:09 PM

Thanks for your response. Then i think those 45W adapters will suffice. I don't mind taking a longer time to charge if that will increase my chances of a healthier battery in the future.

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09-24-2013

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Re: Rapid Charge

2014-01-24, 7:49 AM

Hi,

 

Hope your query has been clarified. Please feel free to post back in Lenovo Community Forums if you have any further query.

 

Cheers!:smileyhappy:

 

Best regards,

Mithun.



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171 Posts

06-23-2011

GB

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Re: Rapid Charge

2017-03-18, 15:33 PM

This is an old thread I know, but did you find the 45W charger sufficient for your needs?

 

My thinking is the same as kr_clk - more heat means shorter battery life. What would be ideal though would be if, when connected to a 65W power supply, you could actually say whether to use RapidCharge or normal. Then you could only use RapidCharge when you knew you needed it. Has anyone seen a setting in a Lenovo Windows control panel like that?

_____
X1C5 May 17 | i7-7600U 16G 1TB LTE W10-1709 | USB3 dock + two 1080p displays, 25% on road
X220: i7, 16GB, m500 960GB, F5521gw
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3266 Posts

12-22-2008

CA

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Re: Rapid Charge

2017-03-20, 13:41 PM

did you find the 45W charger sufficient for your needs?

 

That depends on the ThinkPad model you're using the charger with. If the model specifications call for a 65W charger then a 45W model may not be able to keep the ThinkPad working or the battery charged under certain circumstances, e.g. when you're running CPU-intensive applications like games, the screen is at full brightness, etc.

 

> more heat means shorter battery life. What would be ideal though would be if, when connected to a 65W power supply, you could actually say whether to use RapidCharge or normal

 

It's true that heat is an enemy of battery life. But battery technology has also improved greatly in recent years. They generally last much longer than the 2 or 3 years than in the past. Also newer chipsets run much cooler. As a result it may no longer be necessary to worry about these issues.

 

Has anyone seen a setting in a Lenovo Windows control panel like that?

 

No. However Lenovo Settings does have Battery Charge Threshold settings that are intended to increase battery life for people who run their systems primarily on mains power.

 

 


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171 Posts

06-23-2011

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Re: Rapid Charge

2017-05-01, 19:42 PM

Thanks for the update Dorian (sorry I only just noticed it).

 

This would be for an X1C 5th gen I have on order - it's an i7-7600U and (in the UK anyway) the 45W charger is default but I've ordered with the 65W charger option. I'll see if there's any way on Windows to monitor power consumption but I may well order a 45W charger later, just to keep for use at my desk/overnight, as well as try Lenovo Settings to stop it charging to 100% all the time.

 

Having a replaceable internal battery does take some pressure off as I'll look to buy a new one in a year or two to keep as a spare (whilst they are easily available).

_____
X1C5 May 17 | i7-7600U 16G 1TB LTE W10-1709 | USB3 dock + two 1080p displays, 25% on road
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4 Posts

01-02-2019

US

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Re: Rapid Charge

2019-12-21, 13:49 PM

My response might be late now, but thought of sharing my experience with Lenovo rapid charge.

I own a ideapad flex6 (65W factory charger) and started using rapid charge (option in lenovo vantage) just after a month of purchasing brand new laptop (manufacture date 4/14/2018). As other ppl have noted, yes, battery does get hot but it charges fast as well. Over the time, I did not realized that rapid charge was killing battery too. Rapid charge, over the time, decreases the charge retain capacity of battery. I realized this just a week back (using rapid charge for 1.5years) when I was travelling. Laptop cannot run on battery power even for 20mins. In lenovo vantage I saw message "the battery can only store 9.9% of its original full charge capacity". Soon after that I started getting large fluctuation in battery percentage indicator. One moment it shows 70% charge, another second it will drop to 20%. Many times, laptop just shutdown as battery drops to 0% from 40%. For a moment I was shocked that battery is almost dead with 1.5years!!! I was expecting a battery to last for at least 3-4years. It is not even half of expected duration.

 

Have disabled rapid charge few days back. As of today, I saw that charge retain capacity is increasing. Now its upto 55%. Which is a good sign for battery. Now, sometimes I switch on conservation mode which charging. Do not know if capacity will rise to 100%, as battery is just 1.5years old. I pledge never to use rapid charge as it kills battery.

 

I plan to raise this concern to lenovo support.

 

 

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1 Posts

04-08-2020

IN

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  • Message 9 of 10

Re:Rapid Charge

2020-04-08, 12:50 PM

Thank you, Dinesh, for sharing your experience. It helped me to understand the consequences of using Rapid Charge option, even more in details.

 

I enabled Rapid Charge option in Lenovo Vantage in my Legion Y730 laptop. It charged the battery very fast. But I always had a doubt. So I disabled it few weeks back. After reading your experience I realized how much this option has actually affected my laptop's battery. The design capacity of battery is 57Wh but now full charge capacity is only 50.82Wh.

 

I used to keep the laptop on AC power. Now I disconnect the AC adapter whenever possible to reduce the cycle count. And also enabled power saver mode when the laptop is running on battery.

 

I think a critical warning should be given near to Rapid charge option. People should realize that how this option can be a cause for the reduced life span of the battery and should use it only when required.

 

Also, there should a quick toggle option in Lenovo Vantage toolbar for this.

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1 Posts

08-27-2020

DE

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Re:Rapid Charge

2020-08-27, 17:53 PM

So lets dig up this old thread again.

 

@ikrsh How can you check the full charge capacity? Would love to see mine.

 

Also just btw the 6Wh decrease you see doesn't have to come from quick charge. You said that you leave your laptop charging which itself is very bad if not worse than quick charge. If you still got problems maybe consider holding your battery level between 20-80% this will ensure longevity

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