Battery-related questions on Framework Laptop 13

[Ruby]

Can I equip 61Wh battery on Framework Laptop 13 with AMD Ryzen 5 7640U? How much it does go long time after fully charged? Is there any issue about battery swelling when charging the laptop is continued after fully charged?

[MJ1]

Welcome to the forum.

@Ruby

Can I equip 61Wh battery on Framework Laptop 13 with AMD Ryzen 5 7640U?

All Ryzen 5 systems include the 55Wh battery. Only Ryzen 7 systems include the 61Wh battery.

@Ruby

Is there any issue about battery swelling when charging the laptop is continued after fully charged?

No laptop, phone, tablet, or other proper li-ion device will continue charging after it reaches 100%. To safely charge, li-ion chemistry requires an intelligent charge controller that stops at 100%.

If you wish, Framework Laptops have an option in the BIOS to limit charge / stop at a lower percentage than 100, but this is really just to prolong battery life in situations where the laptop is plugged in the majority of the time. Since li-ion batteries age faster when kept full 24/7.

[Ruby]

@MJ1

Welcome to the forum.

Thanks.

@MJ1

All Ryzen 5 systems include the 55Wh battery. Only Ryzen 7 systems include the 61Wh battery.

So if I buy the Ryzen 5 laptop and replace the battery from 55Wh to 61Wh, is it possible?

@MJ1

To safely charge, li-ion chemistry requires an intelligent charge controller that stops at 100%.

Have all Framework laptops such intelligent charge controller?

I bewared that after change my laptop to Framework some battery swelling issue could happen to me.

[MJ1]

@Ruby

So if I buy the Ryzen 5 laptop and replace the battery from 55Wh to 61Wh, is it possible?

Yes, you can do that.

@Ruby

Have all Framework laptops such intelligent charge controller?

Yes.

@Ruby

I bewared that after change my laptop to Framework some battery swelling issue could happen to me.

Some limited amount of swelling appears to be normal / not harmful for li-ions over the course of their life. But some companies pack their devices so tightly that they provide zero room for it, and so the device will bulge, just poor design honestly. I read that Framework Laptops are designed with room.

Tile-Compatible Expansion Card

We wouldn’t recommend putting anything over the battery. We designed the space above the battery to be able to handle the battery swelling by ~10% over the course of 1000 cycles of usage. For the Audio Board, it is technically removeable, but the hall sensor for detecting lid closure is also on that board, so lid close detection won’t work if it is removed.

[Ruby]

Thanks. So could I regard that there is no problem about battery swelling even though my laptop is plugged in almost all time? How about the battery duration of 55/61Wh?

[Cleber]

@Ruby

How about the battery duration of 55/61Wh?

From this : Framework 13 AMD 7040U review about 10h.

[Ruby]

@Cleber Thanks.

[Charlie_6]

@MJ1

Some limited amount of swelling appears to be normal / not harmful for li-ions over the course of their life. But some companies pack their devices so tightly that they provide zero room for it, and so the device will bulge, just poor design honestly. I read that Framework Laptops are designed with room.

@Tile-Compatible Expansion Card

We wouldn’t recommend putting anything over the battery. We designed the space above the battery to be able to handle the battery swelling by ~10% over the course of 1000 cycles of usage. For the Audio Board, it is technically removeable, but the hall sensor for detecting lid closure is also on that board, so lid close detection won’t work if it is removed.

As an engineer who previously worked with li-ion batteries on power tools. I would recommend using metal plates to physically prevent the battery cells from swelling. The reason why cylinder cells often have longer life compared to pouch or “lithium polymer” cells is that cylinder cells can’t swell or deform. Swelling on pouch cells causes delamination, which means the electrodes and the separator between them no longer fully in contact. This leads to less contact area and incomplete electrochemistry reaction result in higher internal resistance and lower capacity in addition to normal battery degradation so it’s not entirely not harmful. During testing, we was able to demonstrate that when plates are clamped on a swollen cell to its original shape, said cell has higher voltage and lower internal resistance during discharging.

[Jacob_D_Fowler]

Hi, So your telling us that the same case will not accept the 61wh battery? It’s my understanding all 13" laptops have the same case. is this true or not? It’s my understanding that you will only get 2% battery improvement by going to the bigger battery.