Tri-Tronics Pro 500XL - Manual (Page 27)

To get maximum life from your collar batteries, we recommend
that you don't charge for more than 20 hours at a time.
Occasionally exceeding the 20 hour limit will not harm the
functioning of your batteries. However, this product is not
intended to be left on a charger indefinitely.
Storing a Remote Trainer
Before storing your Remote Trainer for an extended period,
charge it for 14 hours. Thereafter, charge every two months
while the unit is in storage, and charge for 14 hours before
first use.
Replacing the Batteries
Both the transmitter and collar have user-replaceable Nickel
Metal Hydride (NiMH) batteries. Proper battery care will
help ensure maximum life from your batteries. When your
batteries do need to be replaced, you can replace them
yourself with parts obtained from Tri-Tronics.
Don’t open your transmitter/receiver until after you have
received the replacement battery pack. Carefully read the
instructions. Only the battery compartments of your Remote
Trainer are user-accessible. Opening any other part of your
Remote Trainer could cause damage.
While Tr i - Tronics Remote Trainer batteries are user- r e p l a c e a b l e ,
they are not intended to be “field replaceable.” Open battery
compartments only for the purpose of replacing a battery.
Open them away from the field to avoid contamination.
Please contact your local officials to find out whether any
special disposal requirements apply where you live.
T R I - T R O N I C S
B a t t e r y C h a r g i n g
Battery Charging Page 23