600JC vs 600JCM
The 600JC and 600JCM are effectively the same model, and differ only with the amount of standard ram (16MB vs 32MB) and the included software.
The 600JC can be upgraded to 32MB of RAM using the HPW-RB32 Ram Card Upgrade.
Battery
Part Number: HPW-LBT2
Specs:
- 7.2V
- 1700mAH
- 4x 3.6v Li-ion 14650 cells
- NOT 18650
Same battery also used in HPW-600ET “ePlate”
Rebuilding
Rebuilding info: https://www.hpcfactor.com/forums/forums/thread-view.asp?tid=21136&posts=1
(source)
Accessories (Options) List
Accessories (Options) list from original product packaging

| PART NUMBER | DESCRIPTION | NOTES |
|---|---|---|
| HPW-WACA | AC Adapter | 10V DC, Positive Tip |
| HPW-LBT2 | Battery | Included battery, also used in HPW-600ET “ePlate” |
| HPW-SP2 | Stylus Pen 2, set of 2 | Same as those included with the main unit |
| HPW-WSCB | Serial Cable | |
| HPW-VSC | Soft Case | |
| HPW-VLS | Screen Protector, 4 sheets | |
| HPW-WPDCB | PDCA Cable | |
| HPW-WPHCB1 | PHS Cable for NTT DoCoMo | |
| HPW-WPHCB2 | PHS Cable for DDI | Only for 600JC/600JCM |
| HPW-CDCB | cdmaOne Cable | Only for 600JC/600JCM |
| HPW-WVCB | VGA Adapter | |
| HPW-RB32 | 32MB RAM Card | Only for 600JC, effectively upgrades to 600JCM |
| HPW-CGW2 | cc:Mail Gateway System II | ※3 |
Notes
※1 HPW-600JC/600JCM専用。※2 HPW-600JC専用です。増設の際は標準内蔵のものを交換しますので、あらかじめ本体のデータをパソコンやメモリーカード(別売)に保存する必要があります。またデータ記憶用のエリアは最大16MBとなります。※3 Lotus cc:Mallとペルソナを連携させます。別途、Microsoft Windows NT 3.51以降をインストールしたゲートウェイ月パソコンが必要です。
※1 Exclusive for HPW-600JC/600JCM. ※2 Exclusive for HPW-600JC. When expanding, the standard built-in unit will be replaced, so it is necessary to save the device’s data to a computer or memory card (sold separately) in advance. Also, the data storage area can be up to 16MB. ※3 Connect Lotus cc:Mall with Persona. A gateway PC with Microsoft Windows NT 3.51 or later installed is required separately.
Serial/VGA Port
Requires adapter from 26-pin connector, either HPW-WSCB for RS-232 Serial or HPW-WVCB for VGA-Out.
I’m not aware of a combination adapter that can do both serial and VGA at the same time.
IR
If it’s the same part as the HPW-200JC, then it is IrDA 1.0 (2400bps to 115.2kbps)