SM4

S.M.Services (UK) Ltd

SM4 Battery Master
Specifications
Size. 175mm x 129mm x 58mm.
Construction. Boxed.
Connections. Via 2.5mm Jack Connector Tip Positive. (Centre Positive).
Supply Voltage. 24v DC or 16v AC.
Supply Current. 500mA DC or 750mA AC Max.
Supply Unit. S.M. Services Mains Power Pack or 12/24v DC Voltage Converter.
Charger Section
  
Output. Single Output, Short Circuit and Reverse Polarity Protected.
Output Voltage. Automatic Voltage Selection 1 to 10 Cells.
Output Current. 5 to 200mA Adjustable, Constant Current When Set.
Indicator. LED Indicator On When Charging.
Cycler Section
  
Pack Size. 1 To 10 Cell Packs, User Selected.
Discharge Rate. 300mA Pre-set.
Indicator. LED On When Discharging.
Meter Section
  
Display. Four Digit LED. Maximum Count 9999.
Description
Description. The Battery Master is a micro computer controlled single output nicad charger, cycler and digital capacity meter combined into a single unit.
The charging section is a constant current type with the charging current capable of being pre-set between 5 and 200mA, 1 to 10 cells can be charged. The charge section will automatically switch off after 14 hours.
The cycler section can discharge 1 to 10 cell packs, the pack size is pre-set by the user, the discharge rate is pre-set to 300mA. The digital display will indicate the actual mA hr's discharged during the cycle down, maximum 9999ma Hr's.
Operation.
1. Set required charge rate.
2. Set pack size.
3. Connect battery.
4. Switch on power pack.
5. Press cycler set button.
The battery will now be discharged down to the nominal fully discharged state and then charged for fourteen hours at the pre-set charge current. The discharged battery capacity will be displayed continuously until the set button is pressed again.
To check total battery capacity, cycle a fully charged battery.
Note. If an un-timed and no cycle charge is required proceed as detailed but omit step 5.

Standard Receiver Wiring Connections
Lead Function Futaba JR/Sanwa(new) Hitec Sanwa Old Style(Moulding Numbers)
+= Positive Red Red Red 3
- = Negative Black Brown Black 2
IP = Signal White Orange Yellow 1


Notes
1.Most JR TX charging jacks are wired tip negative, check before charging.
2. Some transmitters are fitted with a blocking diode, this prevents reverse charging the battery but also prevents cycling. If this occurs the TX battery will need to be removed to perform cycling and capacity checks.
3. For best results a new or un-cycled battery may require three or more charge/discharge cycles before the capacity reading is stable.
4. Lead length is critical when cycling and capacity checking batteries, servo wire leads should not exceed 300 mm, lead lengths over 300 mm and up to 2 metres use 16/0.2 mm above 2 metres use 32/0.2 mm. When cycling through a switch harness to a receiver battery remember that you have an extra 400 mm of wire added to the overall lead length. Where possible direct connect to the battery.

If you have any questions or problems with this module please contact us, we are here to help you.

YOUR GUARANTEE

S.M. Services (UK) Ltd guarantee all products for 1 year from date of purchase. During this time S.M. Services (UK) Ltd will repair or replace all defective products free of charge, except for units subject to fair wear and tear, or units that are subject to crash damage. To qualify for benefits under the guarantee you must have installed and used the product in accordance with S.M. Services (UK) Ltd instructions. Consequential losses and accidental damage to the product are not covered by the guarantee. S.M. Services (UK) Ltd cannot be responsible for results of using our products for any purposes other than those described in the relevant instructions.

RETURNS

Any returned products ordered in error or are not required will if returned unopened in original product packaging within 28 days from date of purchase be subject to a full refund less shipping charges and a 5% handling charge. All other returns will be subject to a full refund less shipping charges and a 20% handling charge.

S.M.Services (UK) Ltd
18 Orchard Way, Cranfield, Beds. MK43 0HU.
Tel.01234 751095