Trimble Outdoors 5700/5800 - Manual (Page 57)

5700/5800 GPS Receiver User Guide 45
General Operation 4
5700 GPS Receiver Oper
ation
– Use the battery only in Trimble equipment that is specified to use it.
– Use the battery only for its intended use and according to the
instructions in the product documentation.
Charging the rechargeable Lithium-ion batteries
All battery types discharge over time when they are not being used.
Batteries also discharge faster in colder temperatures. If a Lithium-ion
battery is to be stored for long periods of time, make sure it is fully
charged before storing, and re-charged at least every three months.
To protect the batteries from deep discharge (5 volts or less), the
receiver is designed to switch batteries or cease drawing power when
the battery pack discharges to 5.9 volts.
A battery that has reached the deep discharge level cannot be
recharged and must be replaced. The following recommendations
provide optimal performance and extend the life of your batteries:
• Fully charge all new batteries before use.
• Do not allow the batteries to discharge below 5 volts.
• Keep all batteries on continuous charge when not in use.
Batteries may be kept on charge indefinitely without damage to
the receiver or batteries.
The rechargeable Lithium-ion batteries are supplied partially charged.
Charge them completely before using for the first time. If a battery has
been stored for longer than six months, charge it before use.
The two internal batteries take approximately eight hours to charge.
They are charged individually, so each battery takes approximately 4
hours to charge.The internal batteries start charging whenever an
external power supply of greater than 15 V is detected.
Storing the rechargeable Lithium-ion battery
• Do not store batteries in the receiver or external charger unless
power is applied.