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OptiMate Professional Chargers

OptiMate PRO-S 12V

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Unique AmpMatic Battery Charger / Optimiser


£129.00 + VAT & Carriage


by tecMATE




OptiMate PRO-S pdf


Connection: SAE


2 / 4 Amp output (selectable)

Now, a new affordable OptiMate PRO commissioning charger for professional workshops.

Based on the famous OptiMate charging algorithm, the new PRO-S offers proven OptiMate technology in a handy workshop format, with selectable charge programs for fast and correct charging of all types of MF power sports vehicle batteries.  If you already have an OptiMate PRO-4-S or PRO-8-S but also need extra charging power & portability, OptiMate Pro-S is perfect. Or if you have a small or satellite workshop which needs a professional charger but cannot justify the expense of BatteryMate or PRO-4-S, OptiMate PRO-S is ideal. The high voltage & pulsing recovery mode is able to save a neglected sulphated 12V lead-acid battery unable to accept a charge from a standard charger. Battery power is optimized during bulk, absorption & cell balancing charge modes by the microprocessor controlled AMPMATIC program, a unique feature that automatically ensures the battery receives optimal current every second, and then tests to verify charge retention. Automatic safety features include quick identification of a severely shorted battery, 12 hour maximum program for USED batteries and electronic reverse polarity protection.



How it works

Before connecting, select “NEW” for the first-ever charge of new sealed (e.g. AGM) motorcycle batteries or 2A / 4A for others, depending on capacity.

  1. Battery check:  OptiMate Pro-S must be connected to a battery (retaining a minimum of 1.8V) to activate its output.
  2. Programming: the ampmatic processor checks the battery’s condition to determine the appropriate program entry point.
  3. Desulphation and recovery: if necessary, 2 or 3 stages of high voltage and oscillatory pulsing are applied to recover neglected, flat batteries (removed from the vehicle) from sulphation to a chargeable state.
  4. Bulk charge stage: the ampmatic processor sets and then continually re-adjusts the constant current optimally for each individual battery according to its evolving electrical characteristics.
  5. Short-circuited cell check: during charging the ampmatic processor checks for short-circuited or damaged cells.
  6. Absorption and equalisation: during 10 minutes the current is delivered in pulses to cause the voltage to oscillate between 13.7 and 14.3V, aiding cell voltage equalisation.
  7. Charge verification: during 5 minutes the voltage is limited at 13.6V while the ampmatic processor monitors the current absorbed by the battery. If this reveals a less than optimal charge, the program reverts to absorption for a further 10 minutes (maximum 12 reversions).
  8. Charge retention test: when the optimal charge has been achieved, the first check for battery (and connected system) power leakage commences. If the battery passes the first 30 minutes test (NEW selection, 10 minutes only), the test is extended up to 12 hours for a definitive result. If the voltage falls below 12.4V in this period the extended test is terminated. Results of the tests can be read at a glance on the easy-to-read LED panel. 30-minute tests are repeated hourly until the OptiMate PRO-S is disconnected, so that the battery status indication is continually updated.
  9. Charge maintenance: during alternate 30-minute periods, at a float limit of 13.6V the battery is offered whatever charge current it needs to sustain it against any small connected loads or power leakage and against natural self discharge.  OptiMate PRO-S can be left connected to the battery indefinitely, the battery will stay cool and safe. And optimally charged. Of course.


Technical Specifications

Recommended for:

AGM / MF, STD, GEL and spiral cell batteries from 2Ah to 100Ah (48 hour charge)

Programme control:

fully automatic ampmatic processor

Input Voltage:

230V 50Hz

Input current max:

0.45A @ 230V

Reverse drain current:

less than 1mA

Output current (bulk charge):

0.4A – 2A

Automatic desulphation:

multistage (high voltage, turbo and pulsed mode)

Charge time limit:

48 hours (maintenance time: unlimited)

Maintain / test cycles:

30 min/30 min (alternating hourly)  First test on ‘NEW’: 10min

Charge retention test:

5 possible results from ‘good’ to ‘bad’


287 x 127 x 80 mm



Enclosure classification:



Easy direct wall mounting

Input cable length:


Output cable length:

2.65m (incl. extension, excl. connection set)

Included Accessories:

1 x O-4 clamp lead; 1 x O-1 fused eyelet lead; 1 x extension cable

Operation temperature range:

0°C / +40°C


2 years



E-Mail: sales@AccuMate.co.uk