Charger Maintenance
This charger was designed to be powered down when not in use to extend the life of the
charger. There is no “off” button, so to power it down you will need to either unplug the charger from
the wall socket or shut off power to the socket/circuit that the charger’s cord is plugged into. Prevent
dust from collecting inside the charger (dust causes overheating), but do not cover charger during
use. Do not leave the battery on the charger after charging is complete (whether or not the charger
is plugged into power) since that can cause deep discharge damage to the battery cells (see below).
Battery Maintenance and Cleaning – BEWARE OF DEEP DISCHARGE!
Nickel based batteries (like Dewalt's NICD version and certain generics NICD/NIMH) self-discharge
even when not in use. When they reach a very low state of charge (deep discharge), the battery cells
can be damaged. This damage is not covered by warranty. To avoid damage, we recommend you
bring the battery to full charge before storing and/or before it sits for any length of time. If you use and
charge the battery daily, you will likely avoid deep discharge damage. If the battery is not used and
charged daily, bring to full charge after each use and fully recharge once per month if not
used.Topping off the battery’s charge without fully discharging will not harm the battery.
Cleaning the battery’s charging contacts may be required when you notice dirt, dust, or residue
buildup (use a Q tip or cotton swab with a small amount of rubbing alcohol to wipe the metal contacts,
then dry the contacts before using the battery again).
Important Differences
This 24v charger replacement stops charging when it senses that all 20 cells of the battery are at
least 90% (or after about 80-120 minutes max). Why? Charging each cell to at least 100% would
consistently bring some cells to well over 100% which actually makes the battery break down (and
need to be replaced) sooner. This charger replacement helps you extend the overall life span of the
battery. This charger will only begin charging the battery again if the outlet loses and then regains
power (or is unplugged from the outlet and then replugged in) or if you remove and reinsert the
battery into the charger. This is different than the Dewalt charger and the Stryker SMRT charger.
Stryker Power Cot Users
Like the Dewalt brand original 24v battery/charger system that Stryker originally shipped with their
cots (before SMRT existed), this replacement system can yield about 5-10 lifts average per charge
(actual battery performance may differ due to environmental factors, patient size, call frequency and
ambulance cot condition).
Wall/Surface Mounting the Charger
As of January 2018, the DE-CH03 comes with mounting holes built in and screws for easy
wall/surface mounting. Choose a safe, cool, and dry location near a power outlet or extension cord,
but clear of other devices on the wall (make sure screws will not penetrate any wiring already in wall).
Using a phillips head screwdriver, screw the 2 included screws into the wall 5 and 1/8th of an inch
apart (1 screw above the other in a straight, vertical line). If center of bottom hole/screw is at the 0
mark on your ruler, then the top screw/hole will sit right between the 5 inch mark and 5 and 1/4th inch
mark. Do not screw them into the wall so far that the charger’s mounting holes cannot grab/sit
securely on the screw heads. Holding charger vertically so that the LED light is at lower left corner,
line up the charger’s built in mounting holes with screws on the wall, then let it sit securely on the
screwheads. This position allows you to slide the battery down onto the charger, then slide it up to
remove (hold charger with other hand while sliding up so that charger does not come off wall).
