HydroBatt-N Manual Rev A - Hobi Instrument Services
Contents
1. 0A Ifthe display does not show 4 0A press Start again then adjust the value with the Increase and Decrease buttons When the value 15 correct press Start again Press the ncrease Button You should see NiMH DISCHARGE Da 0V e Ifthe display shows incorrect values press Start again until the incorrect value blinks then adjust the value with the Increase and Decrease buttons When the values are correct press Start again Press the Increase button again until the display shows NiMH CHARGE Man CURRENT 4 0A The charger 15 now ready for use with HydroBatt N 2 6 Principles of Charging During primary charging the charger applies 4 A of current to the battery while monitoring the battery s voltage Figure 8 shows the typical voltage during a charge The voltage increases very rapidly during the first 10 of the charge then very gradually during the middle portion During the last 20 of the charge charging energy 15 increasingly converted to heat within the cells raising their temperature At full charge the voltage increase 15 counteracted by increasing pressure within the cell When charger detects a decrease in the voltage 1 ends the high current charge and switches to trickle mode The trickle current 15 590 of the fast charge current which allows the battery to accept some additional charge without excessive heating 10 Voltage Ahr 1 2 Elapsed Time Ahr Figure 8 Typical voltage dur2. ship your instrument in its original container which 1s designed to protect it against rough handling 13
3. EC epe eap oe eo Dope o sepe ese 13 Zl SSERVICEXAND SUPPOR T oU euis utet mas cs eae Ose A ctu c ea e M pre 13 EOUPMENT RETURN tne een t 13 1 USING THE 1 1 Introduction The HydroBatt N shown in Figure 1 is a high capacity rechargeable battery for powering underwater equipment It 15 especially suited 10 powering autonomous instrumentation packages that either require high intermittent power or long mission durations The housing is corrosion proof acetal plastic conservatively designed for its 500 meter depth rating HydroBatt N contains a 16 cell Nickel Metal Hydride battery with 12 Amp hour charge capacity at a nominal output voltage of 19 2 V actual range 16 to 23 V For even higher capacity multiple HydroBatts can be connected together with suitable Y cables The supplied charger recharges the battery fully in a maximum of 4 hours 1 2 Precautions Though it is protected against various faults the HydroBatt contains enough energy to cause a fire or explosion if severely misused Even a momentary short circuit can damage the battery Note the pressure relief valve on the top end cap Figure 1 HydroBatt The black circle opposite the connector on the top end cap 15 the pressure relief valve Never block the valve If it pops up that indicates container and use a dummy plug to prevent the a possible hazard and you should discontinue us
4. HydroBatt N Oceanographic Battery USER S MANUAL Revision A1 Hydro Optics Biology amp Instrumentation Laboratories MOBIL s Lighting the Way in Aquatic Science www hobilabs com support hobilabs com Revisions Al April 2013 Correct editing errors A April 2013 Initial Release 1 USING THE HYDROBATIEN 5 Il SENT RODUC Di IDA SU RUE Dara CMM A UM I I MEO D rU 5 2 PRECAUTION s M Dr A LU A ons D 5 Ko CAPACITY d TREE 6 LA TOWSVOLEDAGE CCUTOPE x 2 teca ductu fco aa TU a eH DUNEDIN MD ME 6 OVERLOAD PROTECTION a eo uc fauce ae e HE DU EVE mU a E I NI MD 6 1 6 CONNECTING MULTIPLE HYDROBAT TS EO eue po b eese us acne eva cs 7 MEME eie 7 2 RES 8 PRECADTIIONS eei 8 DD M OC Y CC PENNE EE 8 2 3 NCMARGING PROCEDURE LM a a ee 8 2A WOMEREE A DING PROTECTION ae a ae sha ee as aaa 9 DS KCEDARGEPRINITESETZ ATION en LL esa 10 2 6 JPRINCIPECES OFC HAB GING eee a sea ues ta MEE ID EE UE ce eee ede eae 10 3 SPECIFICATIONS ede wins Lo cue cea ad S TE eee 12 4 SERVICE eoa bec dou eeu o eod Pope o deo NU eo eye
5. e and do not block it see Figure 1 Transport the HydroBatt in its original shipping possibility of short circuiting the output Charge the battery only with the charger supplied by HOBI Labs and according to the instructions in Section 2 Do not over charge 1 3 Capacity Under optimum conditions 20 C ambient temperature and a load of 2 Amps the HydroBatt N delivers at least 250 Watt hours of energy on a full charge This decreases slightly at lower and higher temperatures At an ambient temperature of 0 C the capacity decreases by 10 to 15 Capacity also decreases gradually with age When treated properly the battery should retain at least 80 of its capacity after 250 charges Figure 2 shows the typical output during discharge with a constant 2 A current Because the output voltage depends to some extent on temperature and load current the voltage 15 only a very crude indicator of the charge remaining But when no load 15 connected to the battery a voltage above 21 V indicates it 1s nearly full and under 19 V indicates it 1s nearly empty Output Voltage V Charge Remaining Ahr Figure 2 Typical discharge characteristic Note that voltage varies not only with state of charge but also with discharge current temperature and battery age so voltage 15 not a precise indicator of charge remain ing The dashed line shows the voltage from the diode protected output that must be used when multiple packs are connected i
6. ery may become noticeably warm during charging but excessive heat indicates a problem and may damage the battery It contains a thermostat that cuts off the charging input 1f the temperature exceeds 50 C At the moment the thermostat trips a red light inside the battery housing will flash This light shines visibly through the housing wall as shown in Figure 7 but should only show very briefly When the thermostat activates the Passport charger will detect a fault immediately discontinue its charge and the light will turn off The charger will sound its alarm and display the message CONNECTION BREAK If the red light Figure 7 A red light inside the battery indicates it 15 blocking inside the battery continues to glow you should remove charge current because of exces the charge connection immediately Allow the battery sive temperature to cool for at least an hour before using it further 2 5 Charger Initialization The following procedure restores the Passport charger to the setup it had when shipped from HOBI Labs You should not need to do this except in unusual circumstances Connect power to the charger Note the four buttons on the front panel Battery Type Decrease Increase and START Press the Battery Type button You should see PROGRAM SELECT NiMH BATT Ifthe display does not show NiMH BATT press Battery Type again until it does Press the Start button You should see NiMH CHARGE Man CURRENT 4
7. ing charge at4 A 11 3 SPECIFICATIONS i 10 2 cm 4 0 43 7 cm 17 2 Acetal plastic 6 1 kg air 13 Ib 2 8 kg water 6 2 Ib Environmental 23 V peak fully charged no load 19 2 V nominal 16 V minimum cutoff voltage 5 A continuous limited by resettable fuse 4 hours maximum Positive output diode protected can Direct output amp charging input do not connect to other batteries Pind thermistor output 12 4 SERVICE AND SUPPORT 4 1 Service and Support For help and advice regarding the operation of your HydroBatt contact HOBI Labs at support hobilabs com You can also download manuals software and other technical information from our website www hobilabs com 4 2 Equipment Return To return your HydroBatt to HOBI Labs for any reason first contact us for a returned material authorization RMA number You can fill out an RMA request form at our web site or email us directly at support Whobilabs com The RMA 15 very important for tracking your equipment Please be prepared to provide us with the instrument serial number the address to which it should be returned after service and any special requests Upon issuing the RMA we will send you shipping instructions After we receive the equipment we will inspect and test it and send a description and cost estimate for any service required We will not proceed with service until we receive your authorization for the cost Always
8. n parallel as described in Section 1 6 1 4 Low voltage Cutoff Because NiMH batteries are degraded by discharging below one volt per cell the HydroBatt includes a circuit that disconnects the output if it drops below 16 V Once this circuit engages it can be reset by charging the battery to at least 19 V 1 5 Overload Protection The output 15 protected by a resettable fuse that can sustain up to 5 A of continuous current If the fuse 15 activated by excessive current the output will drop to a low voltage but will continue to supply a small current To reset fuse simply disconnect load and allow the battery a few minutes to recover before using it again 1 6 Connecting Multiple HydroBatts With a properly wired Y cable you can connect two HydroBatts to increase their total capacity The Y cable should connect the Pin 175 of the two packs to each other and the two Pin 2 s together The HydroPack s output to pin 2 is wired through a diode that prevents leakage of charge between the two packs pin 3 is not diode protected This approach can be extended to any number of packs When connecting multiple HydroBatts beware the short circuit hazard shown in Figure 3 1 7 Storage If storing the battery for long periods charge it before storage and at least once every six months thereafter For Figure 3 Beware of a short circuit hazard in this situation when one branch of the Y cable is con nected to a Hyd
9. rd connects see Figure 5 The jumper connector on the left side of the charger Figure 6 15 also required for operation Connect the charger to AC power Its display should show the following If not follow the steps in section 2 5 to set up the charger properly before proceeding NiMH CHARGE Man CURRENT 4 0A Connect battery charger to the bulkhead connector on HydroBatt with adapater cable supplied by HOBI Labs Press and hold the START button on the charger until it shows NiMH 4 0A 20 00V voltage value will be i Class 2 Power different CHG 000 00 00000 AC INPUT 100 240VAC 50 60H ly Charging is complete when the display shows FULL 0 0A 24 56V actual values will be different CHG 185 18 12345 The second line of the display above indicates the Figure 5 This switch must be set elapsed time in this example 185 minutes and 18 for the correct mains voltage for seconds and the total charge in mAh 12345 mAh 12 3 Ah Trickle charging will continue until you disconnect reset the charger It is safe to allow trickle charging for up to 12 hours MPORTANT Do not attempt to top off the battery by starting a new charge after the charger indicates the battery 1s full This may cause the battery to overheat and lose capacity Figure 6 This connector is required for the charger to operate Do not remove it 2 4 Overheating Protection The batt
10. roBatt the male pins of the other branch carry the first battery s output voltage best life store the battery at temperatures between 10 and 30 C 2 CHARGING 2 1 Precautions Only charge the HydroBatt N with the charger provided by HOBI Labs in accordance with these instructions These instructions apply to the Passport Ultraforce charger Figure 4 which must be properly configured before use The charger 15 properly configured when shipped from HOBI Labs but if necessary you can check and correct settings as described in section 2 5 The charger is not waterproof Protect it from exposure to water Charge the only when it 15 within the range of temperatures from 10 to 30 C Figure 4 Passport charger supplied with the HydroBatt N 2 2 When to Charge Charging the battery too frequently especially when it is already full or nearly full reduces its capacity and working life Ideally you should conduct an experiment with your equipment under realistic conditions to determine how long the fully charged HydroBatt will power it You can then use that discharge rate to judge how frequently you must recharge If practical in your application you should generally wait until the battery 15 at least 5096 discharged before recharging 2 3 Charging Procedure IMPORTANT the charger must be set for the correct mains voltage 110 or 220 VAC Before powering the unit check the switch where the power co
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