BP12, BP24, PS24

12 Ahr and 24 Ahr Power Supplies

Battery Packs

The BP12 and BP24 are battery packs for powering

systems1 that have higher current drain equipment such

as satellite transmitters. They consist of a rechargeable

battery, enclosure mounting bracket, and cables. The

BP12 and BP24 require a regulated charging source

(provided by the CH100 or CH200 regulator connected

to an unregulated solar panel or a wall charger).

Regulator

The regulator controls the current flowing to the battery

and prevents the battery current from flowing to the

charging source. A regulator is required to connect the

BP12 or BP24’s sealed rechargeable battery to an exter-

nal charging source (e.g., solar panel, wall charger).

The CH100 regulator is for standard applications. The

maximum charging current of the CH100 is 1.2 A,

which means that the largest solar panel that can be

used is an SP20.

The CH200 is a microcontroller-

based smart regulator with two-

step constant voltage charging

that optimize battery charging

and increases the battery’s life.

It has input terminals that allow

simultaneous connection of two

charging sources. It also mea-

sures various input, output, and

status parameters to allow close

monitoring of the battery. The

SP70 70-W solar panel can be

connected to the CH200.

Integrated Power Supply

The PS24 consists of a 24-Ahr sealed rechargeable

battery, CH100 regulator, enclosure mounting bracket,

power cable, and a 10” x 12” environmental enclosure.

This power supply is intended for systems such as the

ET107 where the weather station’s enclosure is not

large enough to house a BP24 battery. The enclosure

has one conduit for cable entry and several options for

mounting it on a tripod or tower. The battery should

be recharged via a charging source (see below).

Accessories

Charging Sources

Several wall chargers and solar panels are offered for

recharging the batteries (see Ordering Information).

Solar panels charge batteries by converting sunlight

into direct current. Wall chargers use power from

external ac power lines to recharge the batteries.

Adapters

Campbell Scientific offers two

adapters that fasten onto our

regulators. An A100 adapter

used with a regulator and a

battery pack can power periph-

erals and external devices at nondatalogger sites such

as repeater stations. The A105 adapter increases the

number of 12 V and ground terminals available on the

regulator. The A100 and A105 cannot be connected to

the regulator at the same time.

Above shows the PS24’s enclosure, CH100, power cable, and

battery bracket. The battery is shipped separately, and must be

installed by the user.

The BP12 (shown above) and BP24 include a bracket for mount-

ing to the backplate of an ENC16/18 enclosure. The 27758,

an optional BP12 mounting kit, is also offered if more secure

mounting is required.

1Information about calculating power usage is included in our Power Supply Overview brochure and Power Supply application note. Brochures

and application notes are available from: www.campbellsci.com

Top view of a CH200

showing its LEDs

and terminals.