Aurora, Eclipse, Optic, Flash & Prism series - Lipo, Field and Fast Charging. - RC Groups
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Aug 05, 2009, 07:33 AM
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Aurora, Eclipse, Optic, Flash & Prism series - Lipo, Field and Fast Charging.

Hitec provide accessory part # 58307 for Field Fast charging transmitter packs used in the
Aurora, Aurora 9, Eclipse 7 Pro, Eclipse 7, Optic 6, Optic Sport, Flash 4/5 and Prism 7 series Transmitters.
This because peak chargers either do not operate or
. cut off incorrectly due to protection within the charging circuit.
. Hitec Transmitter Max Charge Rate through Tx charge socket is .09A due to overall circuitry.

Aurora A9 - Run Time with Stock 1300 mAh NiMH Battery
(after say three cycles, user should be getting 4<5.5 hours 'on time' depending on back light settings etc)

1) Remove Battery Cover.
[I]NB: If using a Lipo (2S direct in Aurora & Optic Sport only, or with regulator on 3S in other TX - refer note d).
Increase or decrease the thickness of the rubber pad attached inside the battery cover. This to ensure a snug fit which
a. Holds the battery in place to prevent damage to wires or connector.
b. Ensures battery cover does not slip off during use.
c[I]. A123 pack cannot be used in an Aurora or Optic Sport due to both size and the lower voltage
. LiFE battery cannot be used in an Aurora or Optic Sport because the voltage is too low.
A 2 cell LiFE has a nominal voltage of 6.6 and a full charge voltage of 7.2.
They usually drop to about 6.8v pretty quick so it will be under the low voltage alarm of 6.9v in just a few minutes.
d. Hitec Transmitters which use 8 AA Cell battery packs:
. Batteries_Lithium Polymer - Do Not Use 3S Lipo in Transmitters, which usually require 8 cell NiCD/NiMH packs, without a regulator.
NB: Low Battery Warning on those 9.6v TX will be ineffective as being below the danger level

2) Remove battery from case by gripping rear of battery plug and lifting rear slightly to release the locking tongue,
(see pictures) and gently slide out. Do not pull the wires.

3) Connect #58307 to charger, connect battery pack and charge in terms of relevant charger instructions for battery cell type/count.

4) Observe locating tongue and polarity, as pictured, then gently slide battery pack plug onto TX connector.
Refit battery and it's cover. Damage will occur if polarity is reversed.
Eclipse 7, Optic 6, Optic Sport, Flash and Prism series Transmitters' polarity is same as Aurora pictured below.

5) Diode in TX Charge Circuit Never Jump TX Charge Circuit Diodes - Hitec FAQ.

6) Transmitter Battery Plug for Aurora, Eclipse 7, Optic 6, Flash, Prism, Laser & Focus series:
Mini Elmec made by: Kyocera Elco - Series 8263 Specification Sheet
[A Retail Example: Hitec Tx Male Connector Amperage Rating: 5 Amps, Wire Size: 22awg, Leads: 8"]

20Nov10: attached photo of new sticker in latest TX.
Not yet available separately, but as the polarity is molded into the rear case as attached,
suggest concerned owners could use a paint pen or small brush to either highlight ("tip") the + & - with white, silver or yellow paint.
Alternatively, paint red and black squares, such as on lead acid batteries, around the marks.
(Same could be painted into the case of an Eclipse, Optic 6 & Flash 5.)

7Jun11: attached example of Lipo installation.
An adapter, as pictured, reduces chance of wrong polarity and allows easy exchange of Lipo packs.

Aurora, Eclipse 7 Pro & Optic Sport TX - Low Battery Alarms:
Aurora - The alarm is fixed at 6.9v no matter battery type in use.
This still provides plenty of time to land after it goes off.
The user adjustable voltage cut off is for safety so not to over discharge Lipo just in case
transmitter is accidentally left on.
Refer manual page 62 for setting Lipo cut off from 6.0v< 6.6v .

Eclipse 7 Pro & Optic Sport
. Caution - The LBW alarm is fixed at 6.6v for NiMH.
If using Lipo, land without delay as very little time remains.

How to read and interpret the voltage or % display shown on screen.
. TX Voltage Display - Hitec Aurora 9 (also applies to other transmitters).

More information under Hitec USA Support Forum Sticky:
Aurora 9, AFHSS Spectra Modules, Optima Transceivers, Minima Receivers
& Telemetry

- FAQ & Undocumented Features
- Mixes, Setups, Tips. {Individual Links often updated}

Alan Tong.
Alan's Hobby, Model & RC FAQ Web Links

[Right click RCG attachments and select "open in new window".
Button bottom right of IE screen (or _+icons Firefox Toolbar) enables viewing size increase upto 400% for easier reading.]
Last edited by A.T.; Mar 11, 2013 at 04:43 PM. Reason: update a url.
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Nov 21, 2009, 05:44 PM
Registered User
Is the charger adapter #58307 included with the A9 or do I have to buy it separately
Nov 21, 2009, 06:07 PM
AMA # L576
vhoward1122's Avatar
You have to buy it separately.

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