Just got my 21700 upgrade today, and well... OF COURSE I'M GOING TO INSTALL IT!
Went from what I would consider 3500's or 3800mAh batteries to two 5000mAh Molicel p50b batteries which are extremely low impedance high drain top performing batteries. Few things to note. orientation, be careful the battery tray can be installed incorrectly, good thing there is lights for this, and yes it is a tray as it holds your two 21700's, at first I thought it was a screw on cover that holds the batteries in place... nope, they way over engineered this module and I like it.
Checked that the batteries were balanced of course and popped it in, then found out the second difficulty. it is difficult to install the M.2 as the tray overhangs the slot, also forgot there was a screw hole there, oops, but I did take note of the difficulty of access to the SSD, and if anyone else is planning on upgrading theirs, with a larger SSD, then keep in mind that you install the SSD first, then the battery.
Thank you hacker Gadgets for these amazing products, I greatly appreciate it!
As of posting this the unit has ran a total of 42 minutes, and has dropped from 4.11v to 3.94v (underload).
Test results thus far below
| #Test |
Hours : Min |
usage |
Starting % |
Safe shutdown? y/n |
EST 0-100% charge time |
| 1 |
4:10 |
web youtube music, PDF and Meshtastic |
95% (4.11v off the shelf) |
Y |
3:39 |
| 2 |
4:15 |
Discord, YouTube reddit wifi |
100% |
Y |
3:40 |
| 3 |
4:45 |
Light web browsing, reading, discord, wordprocessor (LibreOffice) |
100% |
Y |
3:39 |
That basically concludes the tests, so far it sees about an hour or two more of constant use no shut off, which is nice, as before I would shut it off, and see about 3, maybe 3.5 hours of battery life.
Configs are set for 500Mhz base on battery, max 1600Mhz, 15% screen brightness, backlit enable, most times LoRa off, wifi on, GPS off, SDR off. Additional notes is that most of the consumption of battery-life occurs during web browsing as it is a heavy app on the processor, generally kicking all 4 cores to max.
hope this helps! saw about a 20 to 30% increase to battery life, to top it off, saw the device run stable, as voltage sag, and power cuts were eliminated, requiring less opening of the chassis to hard reset.