Controllers

Auto-Start Controllers

Alltech offers retrofit battery charger controllers that can replace many existing OEM controllers. A low-cost solution when the original controller has failed.

Standard Model

Auto-Start Controller

Without Digital Ammeter

An economical auto-charge control circuit that includes the basic essentials for operators. Simple two-wire hookup with positive and negative connections. Timer contact wires plug directly into the relay. Designed for ease of installation, both mechanically and electrically. Circuitry is adaptable to most methods of charging without needless field adjustments.

Up to 20A @ 240VAC
Two-Wire Hookup
PC Mounted Relay
Digital Model

4200R Digital Retro-Fit Auto-Start

With Digital Ammeter

Digital auto-start with multi-LED indicators and bright red digital readout display. Economical circuit designed for ease of installation. Simple DC voltage and ammeter shunt field adjustments. Available in an easy-mount steel box (4200R) or flat mounting plate (4200P). Multi-voltage — one unit works on all standard DC voltage chargers with easy cell selection via jumper.

Digital Ammeter
Multi-Voltage
4200R Box / 4200P Plate
Standard Features

Built-In Protection & Control

Start-up Delay

Charger starts 5–6 seconds after battery connection

Dual-Color Charge Light

Red for daily charge, green for weekly equalize

80% Charged Indicator

Yellow light indicates battery at 80% charge

Safety Shutdown Switch

Toggle switch to manually shut off charger

Current Sense Shutdown

Auto shutoff when battery is disconnected

Backup Timer

Override shutoff after 12–16 hours if normal shutoff fails

AC Power Failure Memory

Resumes charging upon return of AC power

DC Controlled Operation

No external AC power relays or stepdown transformers needed

Optional Delayed Start

Factory programmable delay up to 6 hours

Optional Boost Relay

Contacts for connecting to existing boost contactor