Dewalt 12V Battery

So far I only have Dewalt 20V tools, but with the addition of a 12V Ratchet DCF503B, time to add a Lithium Ion 12V pack.

I settled with a DCB124 (12V 3.0Ah) because it is the slimmest profile and new higher capacity than the older 12V 2Ah pack.  However, does this mean the cells have lower discharge current as a tradeoff for increased capacity?

Let's take the pack apart and identify the cells used.  

• 4x T10 screws and the shell easily comes apart.  The battery assembly lifts out of the lower shell.
• The pack is entirely made of PC/ABS (no glass filled plastics).
• The BMS has a nice button and 3 LEDs aimed at a nearby light pipe.

Cells used are 3x Samsung INR18650-30Q in series (3S1P configuration).  3000mAh, rated for 15A discharge. 1.5A standard charge rate and 4A rapid charge rate.

Details for 12V pack sizes:

• 12V 2Ah DCB122 (3S1P) 24Wh: Samsung INR18650-20R 2000mAh, 22A discharge.
• 12V 3Ah DCB124 (3S1P): Samsung INR18650-30Q 3000mAh, 15A discharge.
• 12V 5Ah DCB126 (3S2P) 50Wh: Samsung INR18650-25R 2500mAh, 20A discharge *2 = 40A.

Working on compiling a list of cell types in other DeWalt packs since I did not find a readily available list.  The 20V packs are 5S1P or 5S2P.  Flexvolt can have an extra row for 15 cells total.

• DCB203 20V 2Ah: Sanyo UR18650RX 1950mAh, 20A discharge. 1.36A charge.
• DCB200 20V 3Ah 5S2P: LG HB4 18650 1500mAh, 30A discharge (60A effective) per here.
• DCB230 20V 3Ah 5S1P: Samsung INR21700-30T  3000mAh, 35A discharge. 
• DCB204 20V 4Ah 5S2P: 
• DCB240 20V 4Ah 5S1P: 
• DCB205 20V 5Ah 5S2P: Samsung INR18650-25R 2500mAh, 20A discharge (40A effective).
• DCB206 20V 6Ah: Panasonic/Sayno NCR20700A 3100mAh, 30A (60A effective) according to this blog post.
• Switched early 2019 to Samsung INR21700-30T 3000mAh, 35A discharge (70A effective). The first packs had 20700 in a holder that was meant for 21700.
• The DCB206 with the 21700 cells will say “6Ah” in large white lettering on its side sticker, the 20700 based battery will say “6.0Ah” in smaller yellow lettering.
• DCB208 20V 8Ah 5S2P: Rumored to be a Samsung INR21700-40T rated for 35A discharge.
• DCB210 20V 10Ah 5S2P: Samsung 21700-50S, 25A discharge.
• Flexvolt 6Ah: Samsung INR18650-20S 2000mAh, 30A discharge (60A effective).
• Flexvolt 9Ah: Originally used 20700.  Switched to Samsung 21700-30T in 2018/early 2019.
• Flexvolt 12Ah: Panasonic NCR21700A and B cells.
• Flexvolt 15Ah: 15x Samsung 21700-50S, 25A discharge (TBC).  Or maybe 30x 18650.
• 40V 4Ah: Samsung INR18650-20R 2000mAh, 22A discharge per here.

Charge rates for cell types:

• Sanyo UR18650RXL 1.36A.
• Samsung INR18650-25R 1.5A standard 4A rapid.
• Samsung INR18650-30Q 1.5A standard 4A rapid.
• Panasonic NCR20700A 2.2A.

Photo of the new DCF503B 12V 3/8" ratchet alongside the 1/4" version and the 20V 3/8" version:

Photos of the DCB124 pack: