About the article

Rechargeable Battery Checker

Measure capacity by controlled discharge

Rechargeable Battery Checker
The author’s rechargeable battery collection comprises a large number of cells of various types, ages and states. Surely he cannot be the only person who would find a ‘capability meter’ for batteries of great value and interest!
Downloading of this magazine article is reserved for Elektor Members only.
Already a member? click here to log in.
Products
Relevant websites
Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

COMPONENT LIST
Resistors
R1 = 470(
R2,R4,R5,R10 = 1kOhm
R3 = 10kOhm
R6–R9 = 1( 1% 0.5W
P1 = 20kOhm trimpot, horizontal
Capacitors
C1,C2,C3 = 100nF
C4,C6 = 10µF 10V, radial, 2mm/5mm pitch
C5 = 100µF 10V, radial, 2.5mm/6 mm pitch
C7,C8 = 22pF
Semiconductors
D1,D2 = BAT43
D3 = 1N4001
D4 = LED, red, 3mm
T1 = IRL3803
LCD1 = TC1602C
IC1 = ATmega88-20, programmed, Elektor # 120447-41
IC2 = LM285-2V5
IC3 = 7805
Miscellaneous
LCD1 = LC display 2x16, e.g. Elektor # 120061-71
K1 = 10-pin (2x5) pinheader, 0.1‘‘ pitch
K2,K4 = PCB terminal block, 0.2‘‘ pitch
K3 = 3-way receptacle, 0.1’’ pitch
JP1–JP4 = 3-pin pinheader, 0.1’’ pitch
S1 = pushbutton
PCB # 120447-1
Loading comments...