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Single Cell Testing
Figure 7. T35-GFX with Single Cell Holder.
If you’re planning on doing a lot of single cell testing, you will want to get a cell holder
from CEI, #CEI -2090. See our website for this and other products.
To use the optional battery box, connect the large alligator clips to the bare 14 gauge
wires on the battery box, (red to red and black to black) or install a high quality connector
of choice. Whatever connector you choose should be rated for continuous current
capacity of 35 amps if you intend to discharge at full rated capability. Then, connect the
small red alligator clip to the small red lead on the cell holder, in like manner, connect the
small black alligator clip to the small black lead. The small voltage leads must be
connected to get accurate discharge readings. DO NOT increase the length of the battery
box high current leads, or introduce any type of additional connection other than the main
connection formed with the end of the leads. To do so may cause discharge current to
taper off at the end of the discharge, due to additional voltage drops introduced by the
additional series resistance.
Mount the end of the battery box with the springs to a flat surface with the holes
provided. The other end of the box is left free to move. Do not tighten the screws all the
way, otherwise the battery box will not move freely.
The battery box may be forced open by squeezing the spring at the end of the rods and
the box between the thumb and the forefingers. This is useful for placing the cell in the
box. The positive terminal of the cell goes to the red lead end of the box. Rotating the cell
back and forth a few times after placing it in the box will insure good connection between
the contacts and the cell. To remove the cell, place your finger underneath the cell and
push up.
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