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Excellent condition working SHARP PC-1500A + CH-161 16KB RAM For Sale

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Excellent condition working SHARP PC-1500A + CH-161 16KB RAM

Price: US $109.00

Own a piece of great-condition early-1980s retro computing history!
Price is for one but I have 4 in total. This is a Sharp pocket computer PC-1500A from early 1980s, with a CE-161 16KB RAM (in PC-1500A). It's carefully packed and ready to ship!
If you pay the asking price, you may pick the unit you want but all 4 units are in excellent condition.
In the United States, Radio Shack rebranded this Japanese computing marvel into TRS-80 PC-2, which is functionally identical to PC-1500, the earlier version of 1500A that only had 2KB internal RAM. 1500A has 8KB internal RAM.
This computer rivaled desktop computers of its ago with both speed and functionality at a small fraction of the cost.
The unit can be used as a super scientific calculator even by today's standard. It has 12-digit precision and comes with all scientific functions such as sin, log, etc. You can also write BASIC and assembly language programs for a lot of fun activities or professional programs. There are many programs and games for it and even an emulator or two.Search SHARP PC-1500 and you can find a lot of resources about this unit.
Specifications:

LH5801 processor operating at 1.3MHz
26-character LCD display, can be used as a 156*7 pixel display 65-key QWERTY keyboard speaker for generating tones real time clock
16K ROM BASIC, known as “Extended Pocket BASIC” 8KB RAM for slightly over 6K for BASIC programs Including a CE-161 16KB RAM module for 16KB additional RAM for BASIC programs
60-pin Input/Output Interface Connector for connecting peripherals such as the included printer and cassette interface dock plug-in slot for memory expansion, with a 16K module installed.

Here's what works:

The short video demonstrates the main unit, its total RAM, the BASIC program I wrote to print RAM and serial number.
The main unit looks very nice, works like new.
Battery contacts have no rusts.
LCD display is flawless. No scratch on the cover, no artifacts on the LCD.
All keys on the keyboard work. Many used units have the "ENTER" worn down but this one is in great condition.
The speaker works. It makes "modem noise" when loading and saving programs with the cassette interface (cassette interface not included, just used to test the connector of the main unit).
8KB internal RAM combined with a CE-161 16KB RAM module gives you about 22KB storage for BASIC programs.
60-pin Input/Output Interface Connector works.
Loading programs through this interface does take a lot of effort to get working (fair warning).

Here's what doesn't work:

The included 16KB RAM module has a lithium battery that is long dead after 4 decades (rated for 2-5 years). You can replace it with a fresh one if you want. Some soldering required for the replacement.
This means if you remove the module without a fresh replacement battery in the module, the stored program will not be retained.
To replace battery without losing the program, plug in an AC adapter, (center-negative 9V).
There may be tiny cosmetic scratches. See photos.

What's included: