SES - Power

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|(% style="width:150px" %)[[image:Lyxnmotion [email protected]||alt="SES-PARTS-Brackets.png"]]|**SES - Power Adapter**{{showhide showmessage="View all wall adapters" hidemessage="Hide all wall adapters" id="SES - Wall Adapters" effect="slide" effectduration="0.5"}}{{include reference="Servo Erector Set (SES) Building System.SES - Power.SES - Wall Adapters.WebHome" context="NEW"/}}{{/showhide}}

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|(% style="width:125px" %)[[image:Lyxnmotion [email protected]||alt="SES-PARTS-Brackets.png"]]|**SES - Batteries**{{showhide showmessage="View all batteries" hidemessage="Hide all batteries" id="SES - Batteries" effect="slide" effectduration="0.5"}}{{include reference="Servo Erector Set (SES) Building System.SES - Power.SES - Batteries.WebHome" context="NEW"/}}{{/showhide}}

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This page covers options to power the servos as well as electronics.

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= Recommended Power =

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|(% style="width:117px" %)[[image:NoPreview.png]]|(% style="width:919px" %)(((

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**B3AC Lithium Battery Charger**

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The inexpensive B3AC LiPo battery charger has been tested to work with the 11.1V DC Lithium Ion battery pack. It is compatible with 2S and 3S balance connectors. Only the balance port is connected.

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|(% style="width:117px" %)[[image:NoPreview.png]]|(% style="width:919px" %)(((

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**Lithium Battery Charger**

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Hitec's lineup of Lithium battery chargers are suggested in order to charge the 11.1V Lynxmotion Li-Ion pack. NOTE: the battery suggested above should NOT be charged via the XT60 connector.

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)))|(% style="width:71px" %)X|(% style="width:73px" %)✓|(% style="width:144px" %) |(% style="width:154px" %)Many

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|(% style="width:117px" %)[[image:NoPreview.png]]|(% style="width:919px" %)(((

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**XT60 Adapters**

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There are several adapters which can be used to adapt a charger's ports for use with an XT60. NOTE: the battery suggested above should NOT be charged via the XT60 connector.

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RB-Gog-04

RB-Gog-15

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= Alternative Power =

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When using untested power sources (wall adapter or battery), note that the LSS motors have a voltage input range of 6V to 12V. Using the actuator below 6V is not suggested as the electronics risk ”browning out”. Use above 13V can damage the servo. The standard / suggested battery for use with the LSS motors is an 11.1V LiPo, 3500mAh pack made up of three 3.7V 18650 cells. Alternative methods to power the servos using a battery pack include:

== Wall Adapter ==

The recommended voltage input range of the LSS is 6V to 12V. LSS can be powered with 6V-12V wall adapter (one that can provide at least 2Amps). To connect a wall adapter to the LSS motor, an LSS Power Hub can be used. Below is a list of wall adapters that can potentially be used to power an LSS motor, though not all have been tested. Note that the maximum discharge current directly affects the number of servos which can be used simultaneously.

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* [[6V, 3A Universal Wall Adapter / Power Supply>>url:http://www.robotshop.com/en/6v-3a-universal-wall-adapter-power-supply.html]]

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* [[Lynxmotion 6V, 3A Wall Adapter>>url:http://www.robotshop.com/en/lynxmotion-6v-3a-wall-adapter.html]]

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* [[12VDC 3A Wall Adapter Power Supply>>url:http://www.robotshop.com/en/12vdc-3a-wall-adapter-power-supply.html]]

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* [[Phidgets Power Supply 12VDC 2.0A - US>>url:http://www.robotshop.com/en/phidgets-power-supply-12vdc-2a-us.html]]

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* [[Phidgets Power Supply 12VDC 2.0A - EU>>url:http://www.robotshop.com/en/phidgets-power-supply-12vdc-2a-eu.html]]

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* [[12V, 5A Universal Wall Adapter w/ Cable>>url:http://www.robotshop.com/en/12v-5a-universal-wall-adapter-w--cable.html]]

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* [[Wall Adapter Power Supply - 12VDC 2A for RX-LCD5802 (EU)>>url:http://www.robotshop.com/en/wall-adapter-power-supply-12vdc-2a-rx-lcd5802-eu.html]]

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* [[Wall Adapter Power Supply - 12VDC 2A for RX-LCD5802>>url:http://www.robotshop.com/en/wall-adapter-power-supply-12vdc-2a-rx-lcd5802.html]]

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* [[12V, 5A Universal Wall Adapter / Power Supply>>url:http://www.robotshop.com/en/12v-5a-universal-wall-adapter---power-supply.html]]

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* [[Switching Power Supply 12V 5A>>url:http://www.robotshop.com/en/switching-power-supply-12v-5a.html]]

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* [[Phidgets Power Supply 12VDC 5A - US>>url:http://www.robotshop.com/en/phidgets-power-supply-12vdc-5a-us.html]]

== Batteries ==

Only Lithium battery packs tend to include an XT60 connector pre-installed on the battery which can be used directly with the LSS Adapter board. Before selecting a battery pack, it is important to know the concepts of capacity and charge. A battery’s capacity and chemistry affect two main factors:

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1. Maximum discharge rate: The battery should be able to provide sufficient current in the “worst case” scenario (which is specific to your design) in which the combination of servos will simultaneously consume the highest current. Normally the discharge rate of the battery is provided as multiple of the “C” rating which relates to the capacity of the battery. If there is no indication of the battery's maximum discharge rate, we suggest contacting the manufacturer for additional information. Should no information be available, that battery / pack should not be used.

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1. Operating time between charges: How long the servos will last with a specific battery is very hard to determine, since the current draw of each servo relates to the torque it needs to provide, and the time over which torque is applied. One must also take into consideration the number and type of servos connected to the battery, and to a lesser extent, the electronics.

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|**VOLTAGE**|(% style="width:75px" %)**CELLS**|(% style="width:57px" %)**CHEMISTRY**|**DESCRIPTION**

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|< 6V|(% style="width:75px" %) |(% style="width:57px" %) |The servos cannot operate below 6V. Note that 6V packs can often discharge to below 6V and as such the servos will start to lose power and brown out.

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|6V|(% style="width:75px" %)5x 1.2V|(% style="width:57px" %)NiMh|This is best used in RC servo operation where there are other RC servos which can only between 4.8V to 6V. These packs tend not to be able to provide high discharge current and the servos may brown out frequently if a high current is needed.

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|6V|(% style="width:75px" %)4x 1.5V |(% style="width:57px" %)Alkaline|This is best used in RC servo operation where there are other RC servos which can only between 4.8V to 6V. These packs tend not to be able to provide high discharge current and the servos may brown out frequently if a high current is needed.

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|6V|(% style="width:75px" %)3x 2.1V|(% style="width:57px" %)Lead Acid|Due to its heavy weight, a 6V lead acid pack is not often used in mobile robotics, but can certainly be used to power stationary servos.

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|7.2V|(% style="width:75px" %)6x 1.2V|(% style="width:57px" %)NiMh|This pack can be used with 7.4V "high voltage" (HV) standard RC servos. These packs tend not to be able to provide high discharge current and the servos may brown out frequently if a high current is needed.

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|7.4V|(% style="width:75px" %)2x 3.7V|(% style="width:57px" %)LiPo / Li-Ion|A 7.4V Lithium based battery pack is suggested for use with high voltage RC servo motors

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|8.4V|(% style="width:75px" %)7x 1.2V|(% style="width:57px" %)NiMh|These battery packs are not commonly used in robotics and although they can be used, do not provide any advantages over other packs. These packs tend not to be able to provide high discharge current and the servos may brown out frequently if a high current is needed.

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|9.6V|(% style="width:75px" %)8x 1.2V|(% style="width:57px" %)NiMh|These battery packs are not commonly used in robotics and although they can be used, do not provide any advantages over other packs. These packs tend not to be able to provide high discharge current and the servos may brown out frequently if a high current is needed.

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|11.1V|(% style="width:75px" %)3x 3.7V|(% style="width:57px" %)LiPo / Li-Ion|//SUGGESTED//: An 11.1V Lithium Polymer or Lithium Ion battery pack is what is suggested for use with the LSS motors in serial mode. This is due to the fact that they can discharge at higher current and for mobile operations, have a higher power density than NiMh. A charged LiPo pack can be 12.6V, which the servos can accept.

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|12V|(% style="width:75px" %)10x 1.2V|(% style="width:57px" %)NiMh|If an 11.1V Lithium battery pack is not available, a 12V NiMh pack can be considered. However, note that an NiMh pack tends not to be able to provide high discharge current and as such you may be limited to the total number of servos. A charged 12V battery pack would provide ~~12.5 which the servos can accept.

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|12V|(% style="width:75px" %)6x 2V|(% style="width:57px" %)Lead Acid|Due to its heavyweight, a 12V lead acid pack is not often used in mobile robotics, but can certainly be used to power stationary servos.

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|12V +|(% style="width:75px" %) |(% style="width:57px" %) |The servos are not intended to operate beyond 12V, but can accept the voltage of a charged pack (for example up to 12.6V in the case of a charge 3S Lithium pack)

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= LSS Actuator - Power =

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For those who do not intend to use either the LSS adapter or the LSS IO as interface to power the servos, the servos can be powered via the RC cable, or the serial cable. Note that since most RC receivers are intended for standard RC servos, be sure to check the manufacturer's specs before applying more than 6V. Since microcontroller pins cannot provide the current necessary to power the servos, a separate power supply must be used, and a common ground established between the servos, power source and communication source.

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= LSS Adapter - Power =

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The [[LSS adapter page>>doc:Servo Erector Set (SES) Building System.SES - Electronics.SES - Modules.LSS - Adapter Board.WebHome]] includes a section regarding how to supply both direct power to the board, as well as the suggested methods to power additional electronics which may be connected (Arduino, Raspberry Pi, FPGA boards etc.)

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= LSS Power Hub - Power =

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The [[LSS power hub page>>doc:Servo Erector Set (SES) Building System.SES - Electronics.SES - Modules.LSS - Power Hub.WebHome]] includes a section regarding how to supply power to the servos.

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