User manual - fx-5800P
E-137
6. Slide the battery cover back into its original position, and secure it in place with the 
screw.
7. Press the P button on the back of the calculator with a thin, pointed object to initialize the 
calculator. Be sure to perform this step! Do not skip it! 
A
 Auto Power Off
Your calculator will turn off automatically if you do not perform any operation for about 10 
minutes. If this happens, press the 
o
 key to turn the calculator back on.
Specifi cations
Power Requirements:  AAA-size battery (ALKALINE): LR03 × 1
Approximate Battery Life:  1 year (based on 1 hour of operation per day)
Power Consumption:  0.12W 
Operating Temperature:  0˚C to 40˚C (32˚F to 104˚F)
Dimensions: 15.1 (H) × 81.5 (W) × 163 (D) mm
5
/
8
" (H) × 3 
1
/
4
" (W) × 6 
3
/
8
" (D)
Approximate Weight:  150g (5.3 oz)










