Overview
The Gens Ace iMars S100 G-Tech multi chemistry charger is ideal for those looking for a compact and versatile charging solution at the track or field. The new S100 marks a step forward in Gens Aces charger design featuring improvements that enhance the user experience thanks to G-Tech technology.
When it comes to charging the S100 packs a punch providing adjustable charge rate of up to 10A with 100W of power for faster charging. Being a multi chemistry charger is has the flexibility of balance charging 4S-18S NiMH cells or 2S-6S Lithium batteries (including LiPo/Li-Ion/LiFe/LiHV) which means whatever power source your hobby needs Gens Ace has you covered. If you are planning on leaving your batteries for a period of time it is best practice to store them with a level of charge in, this is easily done by selecting the 'Storage' function within the menu. The iMars S100 will then charger or discharge (depending on the condition of the battery) to a voltage that ensures your batteries will be in peak condition next time you go to use them. The charger is also able to discharge batteries of various chemistry types, the discharge rate can be adjusted to a maximum of 0.4A. The S100 has one final setting available called DigitalPower that when selected allows the charger to be the equivalent of an adjustable power supply meaning you can use the charger to power items such as soldering iron or tyre warmers!
When the Gens Ace G-Tech battery is connected to the iMars S100 charger, the charger will automatically identify the battery type through the G-Tech Smart balance connector. The number of cells will be detected and the default charging current recommended by the battery manufacturer will be set. With all this data fed back to the charger it commences charging with these recommended settings ensuring the safe and efficient charging of the G-Tech battery. The iMars S100 is also fully capable of charging non G-Tech cells too thanks to the unique design of the G-Tech balance lead! You can connect a standard balance lead to the S100's balance port, however it is necessary to manually select the battery type and the required working mode to get it started. The charger can intelligently detect the cell count of the battery pack, and combined with the correctly selected battery technology will intelligently set the appropriate charge rate for the battery pack connected.
All the information is displayed via the 1.5inch TFT screen that is clear and concise for ease of reading whatever the light conditions. The user interface is intuitive and simple to navigate which can be done with the new mechanical buttons that offer positive feedback when used compared to the predecessor. The compact physical design also ensures that the charger can be easily packed away for transport and equally wont take up lots of room on your bench.
From time to time the charger may require a firmware update which can be done via the USB port located in between the balance port and XT60 charging port. As this port is powered it can be used to provide power to items such as LED desk lights and charge your phone at the same time as carrying out other functions of the charger.
Everything you need to get charging is in the box, alongside the charger itself you get the mains power lead along with the XT60-T plug adapter,XT60-EC3 adapter,XT60-EC5 adapter and USB lead. Finished in satin black the iMars S100 is the perfect choice for a wide spectrum of pilots, bashers and racers alike who are looking for a simple and effective charging solution for a wide range of battery chemistry types.
In the Box
- (1) iMars S100 Charger
- (1) UK Power lead
- (1) USB Lead
- (1) XT-60 to T-Type Connector / (1) XT-60-EC3 Connector / (1) XT60-EC5 Connector
- (1) Instruction Manuale
Specification
| Input Voltage: | AC 100-240V |
| Output Voltage: | 27V (Max) |
| Max. Input Current: | 50~60Hz~1.5A |
| Discharging Power: | 5W (Max) |
| Charging Power: | 100W (Max) |
| Charging Current: | 10A (Max) |
| Discharge Current: | 0.4A (Max) |
| Cell Balancing: | 2S-6S(Lipo/Li-ion/LiHV/LiFe), 4S-18S(NIMH) |
| Channel: | Single |
| Input connector: | AC |
| Output connector: | XT60 |
Features
- Designed with the new G-Tech balance connector system to aid ease of charging and battery care
- When used with G-Tech batteries the S100 automatically recognises the batteries parameters
- Compatible with both G-Tech balance lead and standard balance leads
- Multi-Chemistry compatible - LiPo, Li-Ion, LiFe, LiHV and NiMH
- Balance chargers 2S-6S lithium battery packs and 4-18S NiMH packs
- Maximum of 10A Charge rate with 100W of power (Maximum)
- Charge, Balance Charge, Discharge, Storage and DigitalPower functionality
- Compact and Lightweight Design
- AC power is provided via the included detachable power lead
- Internal power suppy designed into the charger - no need for external power supply
- DigitalPower function enables the charger to be used as a power supply with things such as soldering irons
- The USB port allows for future firmware updates and can be done with included USB lead. It is also powered meaning you can power small devices or charge your phone from it when connected.
- New physical push buttons ensure a positive feedback when navigating through menus and selecting fields to alter
- 1.5inch TFT Screen displays information with clarity regardless of light levels
- The updated user interface design is intuitive to use and easy navigate

Physical Push Buttons
Gens Ace have replace the touchpad with physical bush buttons, allowing for a more positive confirmation when navigating the menus on the device.

Updated User Interface Design
The updated user interface is intuative and easy to navigate and follows the same design used in the iMars D300 charger.

Compact Size
The iMars S100 G-Tech charger is designed to be compact and lightweight meaning it wont take up too much space whether thats in your pit space or when you pack it away.

In-Built Stand
The in-built stand can be used to position the charger at 45 degrees on a work bench enabling the user to view the information on the screen better when seated.

G-Tech Simplicity
A Smart chip is embedded into the balance connector that enables intelligent interconnection and communication between the G-Tech battery and the smart charger regarding battery information.

Balance Port Compatability
The G-Tech balance port design allows for both G-Tech batteries and standard balance lead type batteries to be used. This means the S100 is the perfect single output charger for all battery types.

DigitalPower Mode
The S100 can be turned into a power supply by selecting the DigitalPower function, allowing you to power things like tyre warmers and soldering irons.

USB-A Port
Located between the XT60 output and G-Tech balance port is the USB-A port that is for updating the charger with the included lead from time to time. As it is powered it can also charge your phone and power small USB appliances such as pit lights.
- Model: Gens Ace iMars S100 G-Tech
- Model Number: O-GAC100GT
- Charger Type: AC Smart Multi-Chemistry Charger
- Power Output: 100W maximum
- Charge Rate: Up to 10A adjustable
- Discharge Rate: Up to 0.4A adjustable
- Lithium Battery Compatibility: 2S to 6S LiPo, Li-Ion, LiFe, LiHV
- NiMH Battery Compatibility: 4S to 18S cells
- Smart Connector: G-Tech automatic battery detection and identification
- Balance Charging: Supported for all compatible chemistries
- Storage Function: Automatic charge or discharge to optimal storage voltage
- Discharge Function: Supported for all battery chemistries
- DigitalPower Function: Adjustable power supply mode for auxiliary equipment
- Dimensions: 139.8mm (length) × 83mm (width) × 40mm (height)
- Weight: 310g
- Power Input: AC mains connection
- Non-G-Tech Battery Support: Yes, compatible with non-Gens Ace batteries
Overview
The Gens Ace iMars S100 G-Tech Smart AC Charger is a compact and versatile charging solution designed for RC enthusiasts who demand flexibility and reliability at the track or field. Whether you're running brushless RC cars, electric RC trucks, or a variety of battery chemistries, this multi-chemistry charger delivers the performance and intelligent features that serious hobbyists expect. The iMars S100 represents a significant step forward in Gens Ace charger design, featuring G-Tech technology that enhances the user experience and makes battery management simpler than ever before.
This charger is perfect for UK RC car owners, RC buggy pilots, and RC truck enthusiasts who want a single, reliable piece of equipment that can handle multiple battery types without fuss. The S100 combines intelligent automation with manual control options, giving you the flexibility to charge exactly as you need. Whether you're a weekend basher or a competitive racer, the iMars S100 offers the tools to keep your LiPo batteries, Li-Ion cells, and NiMH packs in peak condition.
What sets the S100 apart is its innovative G-Tech smart connector technology. When you connect a Gens Ace G-Tech battery, the charger automatically identifies the battery type and cell count, then applies the manufacturer-recommended charging current for optimal safety and efficiency. This intelligent approach removes the guesswork from charging and helps protect your investment in quality batteries. Even if you're charging non-G-Tech cells, the S100 handles them with the same precision and care.
Key Features
- 100W Power Output with 10A Charging Rate — The iMars S100 delivers up to 100W of charging power with adjustable charge rates up to 10A, which means faster charging times for your batteries so you can get back to racing or bashing without long waiting periods between sessions.
- G-Tech Smart Automatic Battery Detection — When you plug in a Gens Ace G-Tech battery using the smart balance connector, the charger automatically identifies the battery chemistry, cell count, and applies the manufacturer-recommended charging current, eliminating the risk of incorrect settings and ensuring safe, efficient charging every single time.
- Multi-Chemistry Compatibility — The S100 is truly versatile, capable of balance charging 4S to 18S NiMH cells or 2S to 6S Lithium batteries including LiPo, Li-Ion, LiFe, and LiHV chemistry types, meaning one charger handles virtually all your RC hobby power needs regardless of what batteries your collection includes.
- Battery Storage Function — For enthusiasts who store their batteries between seasons or take extended breaks from their hobby, the dedicated Storage function automatically charges or discharges your batteries to an optimal voltage level, keeping them in peak condition and ready to perform when you need them.
- Discharge Capability — The S100 can discharge batteries of various chemistry types at adjustable rates up to 0.4A, giving you complete flexibility for battery maintenance, balancing, and reconditioning tasks without needing separate equipment.
- DigitalPower Function — Select the DigitalPower setting and the iMars S100 becomes an adjustable power supply, allowing you to power soldering irons, tyre warmers, and other track-side equipment, making this one genuinely multi-purpose tool for your RC setup.
- Compact and Portable Design — Measuring just 139.8mm long, 83mm wide, and 40mm tall with a weight of only 310g, the S100 is built to travel with you to the track, field, or racing venue without taking up valuable space in your kit bag or toolbox.
- Non-G-Tech Battery Support — Thanks to its unique design, the S100 charges non-G-Tech cells with equal reliability and precision, so you're not locked into using only Gens Ace batteries and can use whatever quality LiPo or NiMH pack you prefer.
Technical Performance
The Gens Ace iMars S100 G-Tech Smart AC Charger represents professional-grade charging technology in a portable package. Built with precision engineering, the S100 delivers consistent, reliable charging across multiple battery chemistries with zero compromise on safety or performance. The charger's power delivery system is engineered to handle up to 100W of power output, allowing charge rates of up to 10A for rapid battery servicing between races or practice sessions. The intelligent G-Tech smart connector integration means the charger communicates directly with compatible Gens Ace batteries, reading cell count and battery data to apply perfect charging parameters automatically. This smart detection system is what separates the S100 from basic chargers — it removes user error from the equation entirely. The discharge function operates at adjustable rates up to 0.4A, providing sufficient capability for battery conditioning, storage preparation, and maintenance tasks. For UK RC car enthusiasts, RC buggy drivers, and RC truck pilots, this charger handles 2S through 6S Lithium batteries (including LiPo, Li-Ion, LiFe, and LiHV types) and supports NiMH packs from 4S to 18S, making it compatible with virtually any modern RC power system. The compact dimensions and lightweight construction make the S100 ideal for transportable charging solutions, whilst the DigitalPower feature expands its utility beyond just battery charging — it becomes a workshop power tool for soldering, heating, and powering field equipment. Construction quality is evident in every detail, with a sturdy housing protecting internal components whilst maintaining the low profile and lightweight characteristics essential for mobile enthusiasts.
What's in the Box
- Gens Ace iMars S100 G-Tech Smart AC Charger unit
- AC power cable for mains connection
- Multi-chemistry balance charging connectors and cables
- User manual with detailed instructions
Frequently Asked Questions
- Is the Gens Ace iMars S100 suitable for beginners in RC hobbies? — Absolutely. The G-Tech smart automatic battery detection takes the complexity out of charging. If you're using Gens Ace G-Tech batteries, simply plug them in and the charger automatically sets everything correctly. Even if you're charging other brands of LiPo or NiMH batteries, the S100's straightforward menu system guides you through the process. This is an excellent first charger for anyone getting serious about their RC car, RC buggy, or RC truck hobby.
- What battery types can the iMars S100 charge? — The S100 is a true multi-chemistry charger. It balances charges 2S to 6S Lithium batteries (LiPo, Li-Ion, LiFe, and LiHV), and 4S to 18S NiMH cells. This means whether you're running modern brushless RC cars on LiPo packs or older NiMH-powered vehicles, one charger handles everything. It's also fully compatible with Gens Ace G-Tech batteries, which offer automatic detection and optimised charging.
- How fast is the charging speed? — The iMars S100 delivers up to 100W of power with adjustable charge rates reaching 10A. This means a typical 3S 5000mAh LiPo battery can be charged significantly faster than with basic chargers, getting you back to racing or bashing without excessive downtime between sessions.
- Can I use the S100 to maintain batteries during storage? — Yes. The dedicated Storage function is perfect for this. If you're taking a break from your RC hobby or storing batteries over winter, simply select Storage mode and the charger automatically charges or discharges your batteries to an optimal voltage level, ensuring they're in peak condition and ready to perform when you next want to use them.
- What makes the G-Tech smart connector different from standard charging? — When you connect a Gens Ace G-Tech battery, the smart balance connector communicates battery information directly to the charger, including cell count and chemistry type. The charger then automatically applies the manufacturer-recommended charging current, eliminating manual setup errors and ensuring safe, efficient, optimised charging every single time.
- Is this charger portable and suitable for track use? — Definitely. At just 310g and measuring 139.8mm × 83mm × 40mm, the S100 is compact and lightweight enough to fit easily into your RC kit bag or toolbox. It's designed for track and field use, making it ideal for UK RC racers and bashers who need reliable charging solutions at their venue.
- Can the S100 discharge batteries? — Yes. The charger features discharge capability with adjustable rates up to 0.4A, allowing you to condition, balance, and prepare batteries for storage or maintenance. This eliminates the need for separate discharge equipment.
- What is the DigitalPower function? — When you select DigitalPower mode, the iMars S100 functions as an adjustable power supply. This means you can use it to power soldering irons, tyre warmers, and other track-side equipment, making it a genuinely multi-purpose tool for serious RC hobbyists.
Why Buy from RC Model Shop?
RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the GENSACE iMars S100 G-Tech Smart AC Charger O-GAC100GT today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.
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