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1. Upper panel with LCD display Operating After connecting to car battery charger greet us with short beep and display shows producers name and software version Below are displayed Start and Setup I m sure it s a first sight love was able to use so many chargers without reading of manual so here will too Press E button then press other then confirm ooops Impossible can t do that There will be no first sight love and plug amp charge So and yet I ve to get an operating manual and read every step Yes It happens sometimes In fact it s quite easy after you understand manual My friend told me later That s easy M button choose what have to be done E and changes parameters Menu and programs Just after switching on button M enters setup of sound on off Tmax On Off Ton 30 to 45 C Toff 50 to 65 C and Voff 10 to 11 5V E button start the charger then buttons choose one of eight program memories or one of two special programs Format Regeneration or Test m j e Eal Clean construction there s cooling fan on the right behind heatsink These 8 program memories can be set up independently This way you can setup parameters for different types of accus and call them in any moment It s really helpful In Forming and Regeneration max 8 cycles you can t setup
2. External cooling fan max current max 1 2 A with protection Display backlight Information s LCD 2 x 16 Acoustic and visual alerts Update yes see text Dimensions 130 x 120 x 60 mm Weight incl cable ab 890 g Price 269 incl Temperature sensor PC cable and software Distribution PP RC Modellbau www pp rc de time for period ab 20s by short pressing of any button Before charging discharging you have to confirm number of cells and set their capacity In fact capacity parameter is a limiter to set charging energy This way you can charge fully discharged pack to some lever which is useful for NiMH or Li Po packs storage When you set capacity to 3600mAh for 3300mAh pack charging will be interrupted no later than after pumping of 3600mAh it s a safety function Graf PC V2 27 software was written to record parameters of charge discharge process s It s very helpful Every graph can display 4 functions at once voltage current change of voltage per minute and temperature You can type producer of cell capacity and brief note in editor window It s a standard in MS Windows that more than one graph windows can be opened at once Volt compare and Capacity compare gives you possibility of comparison of data column graphs There is an additional window data which shows voltage current time change of voltage per minute temperature and cell capacity It can be displayed as
3. Milan Lulic Someone surfing the internet like author does can take advantage of finding news just after they become available on the net This way near the end of previous year found a new computerized fast charger Pulsar 2 with label Made In Poland Technical parameters were very interesting 1 32 NiCd NiMH cells 1 12 LiPo maximal charging current 9 9A 250W of maximal power discharging current 9 9A 35W of maximal discharging power without or 250W with return of energy back to the car battery etc It s clear that this charger got my attention Immediately sent an email to the producer then got quick answer saying that Pulsar 2 will be available in Germany as well After few days received a test version from PP RC Modellbau Mr Piotr Piechowski After opening the of box saw a quite small device without heatsink This tiny device has to have 250W of power Not only There are more of not less impressive parameters There s not enough space to list all of them Anyway we d like to describe most of them here Pulsar 2 has very rigid aluminium casing dimensions 130x120x60mm and weight ab 890g Casing is made a pulpit like what makes using and display reading much easier 2x16 backlit LCD display is located on the top of casing Below display 4 buttons are located and 2 charging sockets on the right On the left side of casing there s sockets of temperature sensor external cooling fan
4. and RS232 Right side has laser cut cooling holes Main power cable for car battery or power supply is 130cm long 6mm2 flexible wire with 2 large crocodile type clamps Inside of casing everything is clean and professionally finished including very well made main board There are quite few components of course there are some SMD components on the bottom side of PCB PIC Flash processor large coil of voltage converter and 5V power supply for charger circuit In the power section we can find 6 MOSFET transistors and double Schottky diode These components are mounted on the piece of brass and yet there s a radiator but exactly where it should be on the power components together with quiet thermo regulated cooling fan Great solution This construction is trustworthy Pulsar 2 is able to reach promised 250W Additionally a step up and step down voltage converter with 65 kHz of work frequency and over 85 of efficiency So we can do practical tests with full load Quite brief manual contains 12 pages A5 and is illustrated with diagrams and pictures of display It s not easy to write such brief manual to make it understandable for user especially when device has a lot of functions This manual is still developing KA Left side laser cut cooling holes _ er Zt Si ie eEnoor 75 ee 3 EREZZE O7 s z Right side sockets for temperature sensor cooling fan and PC Cable
5. charging and discharging current separately When given cycle is started it s easy to break it up This will automatically start the next cycle It s really praiseworthy Oh There s something else Thanks to 8 memories you can use E button to display data of these 8 last processes Pulsar 2 in practice NiCd NiMH cells you can charge with Reflex mode or without it using pulsating current with constant value Reflex mode is identical to ICS1700 processor The only difference is a discharging impulse Pulsar 2 has a 1 1 charge to discharge ratio originally 1 2 5 Like in real reflex charging soft start Pulsar 2 is charging cells with low current which reach his set up value in period of 60 seconds in 5 steps increases it s value Thanks to step down voltage converter Pulsar 2 can charge and discharge single cell with maximal current 9 9A great for cells selection Maximal charging current 9 9A can be used for 1 18 cells Starting from 19 cells Pulsar 2 reduces maximal current physics is omnipresent Worth noticing is fact that Pulsar 2 can charge battery packs in transmitters with protection diode You can use it to charge battery pack in Multiplex Evo transmitter too Charging is turned off via delta peak or inflex method For NiCd NiMH one of two parameters are available to change low high 7mV 3mV_ or 10mV 5mV In the inflex method cells are not overcharged like in delta peak Charging p
6. d Full set of Pulsar 2 including PC cable temperature sensor and software cost is 269 as of 8 2005 It s great functionality to price ratio At the end there wasn t first sight love but great friendship for sure
7. ers recommend charging with 1C current with final voltage 4 235V per cell Noticeably shorter charging Pulsar 2 front view time can be achieved using higher than 1C current 1 5 2C Anyway it s good to have fast mode on hand what can be chosen by some users Since long time many colleagues are charging their packs with higher currents 1 5C or even 2C Probably packs charged 1C has longer lifetime or on the other side Li Po charged with high current would be quicker charged but will not reach long lifetime There is something else please don t underestimate safety level of Li Po cells Today s technology is quickly evolving Li Po cells are more safe and could be charged with higher currents however modelers are more smart what concerns chargers as well as charging technology Also more producers allow charging current 1 5C or even 2C Battery test program is very interesting too You can measure internal resistance of pack and even single cells however result contains resistance of cables and plugs Measurement can be done using freely adjustable current up to 4A apart from cell type According to users manual these measurements are for comparing not absolute Comparing two packs with exact Capacity better is pack with lower resistance And last but not least regeneration program Even 2 3 cycles shows that bad packs are not too old yet Irs another great to have function On the e
8. l was 42 C what was achieved thanks to temperature controlled cooling fan it s switched on at ab 38 C Using reverse return of current to the car battery is possible to achieve even 250W Of course even with 9 9A of discharging current Li Po Li lon Li Ta RAM and Pb cells are modes interesting for most of users There are 2 methods of charging for Li Po Li lon normal and fast In normal method cells are charged with constant current Charging is switched off after reach of 200mAh With this value discharging time is shorter and energy lower compared to other chargers which discharges to achieve 100mA or even 30 40mA for 800 mAh cell it s a difference of 1 5 2 Maximal final charging voltage is 4 20V per cell and can be set up in range 4 0 4 2V in 0 01V steps Pulsar 2 has a very accurate voltage measuring It results with very good cooperation of charger with balancers available for the author during writing of this review Li Po Checker from Orbit CSM Balancer from Lipoly de and KC Balancer from Karsten Camlott ast mode for Li Po cells is a specialty of Pulsar 2 Is it impossible to use most of today available balancers because in the final phase impulse voltage can reach 4 255V per cell All cells have to be balanced before charging in fast mode lm sure that fast mode will not be accepted by most of users because it s a new feature It s clear that Li Po cells produc
9. nd some more nice details Pulsar 2 works great even if there are more chargers connected to the same power source In charge discharge mode display backlight is turned off power saving It s turned for short time automatically to catch user s attention only when some work parameters are changing Backlight can be turned on any LCD display s charging in 4 1s sequence C charge 10 cells current actual voltage t ascending time and pumped capacity Ah 1s input voltage and temperature Power supply Car battery min 30 Ah recommended 70 Ah Mains power supply 14 V 30A min 10A Power supply voltage 10 16 V Idle current 140 mA Idle current 60 mA Auto shut down minimal voltage min 10 V do 11 5 V Auto shut down maximal voltage gt 16V Reversal polarity protection Input yes Output yes Connectors 6 mm cable and crocodile type clamps Charge power 250 W Charge current 9 9 A Number of cells 1 32 NiCd NiMH 1 18 Pb 1 26 RAM 1 12 Lilon LiPol Discharge power 35 W 250 W with energy return to car battery Discharge current max 9 9 A Final discharge voltage 0 9 V per NiCd NiMH cell Voltage converter step up down yes yes Voltage converter frequency ab 65 kHz Automatic programs Process memories 8 Program memories 8 Temperature measurement range 0 99 C in 0 1 C steps Voltage measurement range 0 1 60 V Current measurement range 0 1 11A Timer up to 14 hours
10. per one cell too Unfortunately there isn t possible to export graph in different formats like jpg gif xls etc Anyway this software is very easy to use It s in English but anyone can learn few common words in short period elektroModell 4 2005 http www modellbauportal de http www neckar verlag de Magazine Author Milan Luli Marek Szulen EN Piotr Piechowski PL http www pp rc de Translate Produce Elprog S Krymski http www elprog com pl Charge Ca 1535Y 17704 rayan 6 500 i am om oss ran asas 6S qia dU yi eepr cere tae idear e fierce Chad Aa PP Chote 1D LT Charging discharging process graph 7 cells Sanyo RC 4 5 S C 1600 mAh Column graphs charged discharged capacity Pulsar 2 is very reliable charger which can charge all currently available cell types Thanks to great technical parameters professional build and reliable work surely means highest class of charger With it s 9 9A of charge discharge current even for single cell Pulsar 2 is a power charger which don t have to hide from more expansive competitive products it s a charger done with rule for professionals by professionals Many years of experience with Pulsar 1 older brother of Pulsar 2 resulted in improved construction of Pulsar 2 There is software update possible of PIC processor unit To update Pulsar 2 have to be send to the producer there is a hardware update possible if neede
11. rocess is interrupted just before full charge This makes cells much cooler and belongs their life time Someone would want hot cells with more pressure ok just charge them with higher current with capacity few lower There is one more safety parameter charging can be interrupted by temperature control There is a risk of premature charging interrupt Due to this producer suggest to use inflex mode for current over 1C and more than 4 cells In delta peak mode differences of switching voltage are very low gentle for cells therefore for current lower than 1 5C delta peak should be set to high and to low for higher than 1 5C Because Pulsar 2 measures battery pack voltage in no current impulses results are lower than during measuring with universal millimeter Good to know it Discharging of NiCd NiMH offers 2 methods auto or constant current Auto discharges cells to 0 9V per cell first using chosen current then lowering current until it reach 200mA Of course it takes longer time but achieved capacity is higher than in constant current mode Auto should be switched off only when we want to quickly discharge or discharge charge In this case discharging will be interrupted immediately when voltage drop to 0 9V per cell with current reduced to 200mA Pulsar 2 on his own can discharge up to 35 Watt what is a good result Maximal temperature measured at back pane
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