Williams AV CHG 3512 PRO – 12-Bay Body-Pack Charger with Case

Product Overview

The Williams AV CHG 3512 PRO is a 12-bay body-pack charger with a hard-shell carry case, built for portable assistive listening deployments that move between venues. The drop-in charger recharges NiMH batteries inside up to 12 Williams AV body-pack receivers and transmitters — no battery removal required — while the included copolymer case protects the system in transit. For rental houses, touring AV crews, and multi-site organizations, it consolidates receiver charging, storage, and transport into one package.

Product Description

The CHG 3512 PRO pairs the 12-unit CHG 3512 drop-in charger with the CCS 056S carry case, a TFP 037 switching power supply, and a US main power cord. Compatible body-packs include the PLR BP1 loop receiver, PPA R37 and PPA R38 FM receivers, PPA T46 FM transmitter, and WIR RX22-4 infrared receiver — covering FM, infrared, and hearing loop product families from a single charging station.

Units dock directly into the bays with their NiMH AA batteries installed, and the microprocessor-controlled charger runs a timed 16-hour cycle at 140 mA before switching to a pulse/maintain mode that keeps batteries topped off without overcharging. Each bay has a red LED that stays lit during charging and blinks when the battery is full, so technicians can confirm system readiness at a glance before load-out. The switching power supply accepts 90-240 VAC, useful for crews working across different facilities.

For fixed installations that do not need transport protection, the standard CHG 3512 12-bay charger offers the same charging performance without the case. See the complete Williams AV collection for compatible receivers, transmitters, and assistive listening accessories.

Key Features

• 12-Bay Drop-In Charging — Recharges NiMH batteries inside up to 12 body-pack receivers or transmitters without removing the batteries.
• Included Transport Case — The CCS 056S copolymer carry case protects the charger and docked units between venues and carries a limited lifetime warranty.
• Multi-Family Compatibility — Works with PLR BP1 loop, PPA R37/R38 FM, PPA T46 FM transmitter, and WIR RX22-4 infrared body-packs.
• Timed Charge with Maintain Mode — A 16-hour timed cycle at 140 mA transitions to pulse/maintain charging so units can stay docked safely after completion.
• Per-Bay LED Status — Red LEDs stay lit while charging and blink when batteries reach full charge for quick visual checks.
• Universal Input Power Supply — Included TFP 037 switching adapter accepts 90-240 VAC and outputs 5 VDC at 4 A.
• Complete Kit — Ships with the 12-bay charger, carry case, power supply, and US main power cord, ready to deploy.

Typical Applications

• House of worship
• Government space
• Conference room
• Training room
• Auditorium
• Multi-purpose room

Technical Specifications

Frequently Asked Questions

Which Williams AV body-packs does the CHG 3512 PRO charge?

It charges the PLR BP1 loop receiver, PPA R37 and PPA R38 FM receivers, PPA T46 FM transmitter, and WIR RX22-4 infrared receiver — with NiMH AA batteries installed and the device set to the NiMH battery setting.

Do I need to remove batteries to charge?

No. Body-packs drop directly into the bays and the charger recharges the NiMH batteries inside the devices, which keeps batteries paired with their units and speeds turnaround.

Can devices stay in the charger after charging completes?

Yes. After the 16-hour timed cycle, the charger switches to a pulse/maintain mode, so units can remain docked and ready without overcharging.

Is the power supply suitable for international use?

The included TFP 037 switching power supply accepts 90-240 VAC input; the included main power cord is for US outlets. The kit as configured is intended for US use.

What is the difference between the CHG 3512 and the CHG 3512 PRO?

Both use the same 12-bay charger. The PRO version adds the CCS 056S hard-shell carry case for transport between sites, making it the better fit for rental and portable deployments.

What warranty coverage is included?

The charger carries a 1-year Williams AV warranty (90 days on cables and power supply), and the copolymer case is covered by a limited lifetime warranty.