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Fanfold Paper
Posts: 2
Registered: ‎07-18-2018
Location: DE
Views: 149
Message 1 of 2

Extending battery life of ideapad 320S (80X4) by replacing a 2- by a 3-cell battery.

Hi there!



Since the battery life of 320S is less than stellar, I tried to find ways of enhancing it beyond the beaten paths. When examining which batteries are compatible to mine, I noticed that besides three two-cell types (7.2V),

- 5B10M49825

- 5B10M49823

- 5B10M49822 (this is the one the laptop came with)

three three-cell units (11.4V ) were offered as possible replacements. These are:

- 5B10M49826

- 5B10M49824

- 5B10M49821


My question is:

What effect does the change of the battery voltage has on the battery life?

Has anybody tried this change and what were the results?

I think this strongly depends on how the onboard voltage is generated: A very primitive voltage regulator would simply turn the excess voltage into heat and would have no effect on the battery life.

A more sophisticated regulator would detect the incoming voltage and could (the conservation of power applies) turn additional voltage (e.g. 11.4V) into additional current at a lower voltage (e.g. 7.4V), yielding a longer battery life.


Can Lenovo say how the onboard voltage regulators will react to an aleviated input voltage – can the battery life be extended this way?

Has anybody already tried this conversion and if so, what was the result?


Best regards and thanks in advance,


Sr Support Specialist
Posts: 7,224
Registered: ‎11-30-2015
Location: PH
Views: 78
Message 2 of 2

Re: Extending battery life of ideapad 320S (80X4) by replacing a 2- by a 3-cell battery.

Hi Duesentrieb_610,




On a similar discussion here, we do not have any confirmation yet for upgraded battery capacity specific to the model and likewise would not suggest any purchase at the moment.


It would be best to stay with the same part number tested for the variant model since the BIOS would also be one of the challenge. It would limit detection of non compatible parts (whitelist) not tested by the engineering team for safety and performance certified for the machine.



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