Simon Hester

Thanks for the comments Suicideneil. I guess my battery is quite exposed on the side of the chassis just under the plastic cover. I was going to go with Hobbyking whats a good alternative I'm UK based? figured they were a US company and I guess from what your saying returns are difficult. I would have gone to my local shop but it shut down a few years back but were always really friendly and helpful. My current plan was the following given my budget is about £100. 2 x Turnigy 5200mAh 2S 30C Hardcase Pack (ROAR APPROVED) IMAX B6AC V2 Professional Balance Charger/Discharger (UK Plug) I then needed a lead adaptor for charging and some HXT 4mm connectors to replace my current Tamiya connector on my ESC It all came to just under £100. Thanks Simon

Thought I had my choices made then realised the batteries were not hard case type LiPo. When i checked with HobbyKing they suggest hardcase is a must for RC cars is that correct? Also what mah rating should i go for. It seem the higher mah ratings the higher the C numbers go and i just don't need bigger C numbers but would like a good run time maybe 15 - 25 mins. Currently thinking of this battery https://hobbyking.com/en_us/zippy-4000mah-2s1p-25c-car-lipoly-roar-approved-de-warehouse.html?queryID=2e8878adf4b46090128183678f6a305f&objectID=24562&indexName=hbk_live_magento_en_us_products Or would it be better go for one of the 5200mah or 5000mah found here https://hobbyking.com/en_us/batteries-chargers/batteries/lipo.html#q=&idx=hbk_live_magento_en_us_products&dFR[battery_pack_type][0]=Hardcase&dFR[brand][0]=Zippy&dFR[config][0]=2&dFR[warehouses][0]=UK&dFR[warehouses][1]=Global&dFR[warehouses][2]=EU&dFR[warehouses_stock_data][0]=UK|1&dFR[warehouses_stock_data][1]=UK|2&dFR[warehouses_stock_data][2]=UK|3&dFR[warehouses_stock_data][3]=Global|1&dFR[warehouses_stock_data][4]=Global|2&dFR[warehouses_stock_data][5]=Global|3&dFR[warehouses_stock_data][6]=EU|1&dFR[warehouses_stock_data][7]=EU|2&dFR[warehouses_stock_data][8]=EU|3&hFR[categories.level0][0]=Vehicles %2F%2F%2F Cars&is_v=1 Thanks in advance

Thanks for the replies Looking to get the following 2 x Turnigy nano-tech 3300mAh 2S 35~70C Lipo Pack w/XT-60 https://hobbyking.com/en_us/turnigy-nano-tech-3300mah-2s-35-70c-lipo-pack-xt-60.html and IMAX B6AC V2 Professional Balance Charger/Discharger (UK Plug) https://hobbyking.com/en_us/imax-b6ac-v2-professional-balance-charger-discharger-uk-plug.html?___store=en_us

I was reading through my ESC manual and it mentions the burst current 190a for the model I have does this need to factored into the batteries C rating? The EZrun ESC manual is here oddly it only lists a 35amp or 60 amp unit mine appears to be 45amp account to the spare parts list on centryuk.com https://www.hobbywing.com/products/enpdf/EzRun60A.pdf Thanks

Quite novice at all this I do wonder if i should just stick with Nimh batteries. I assume the ESC rating would be rating of the motor? The spares list for the car does show a LiPo of 32 mah 20 C which put it at a rating 64. I assume a bigger value than 45 is safe to run? BUt getting anything really big is just not worth it? Also what sort of run time would I expect to get doing a bit of bashing on a car park and grass field? Is the run time affected by the C rating? Thanks

Hi Looking for Lipo battery advice. Looking to switch from Nimh to Lipo my car has an esc that is rated at 45amps. I've checked and the esc has the required low voltage cut off although not sure why the max rating of the motor is? The motor is brushless 3421Kv BS701-007R by bsd racing. I saw at the start of the post the calculation between Mah and the c rating but not sure what the max amps is for the motor. So what sort of C rating should I be aiming for? Thanks Simon

I'm beginning to think so. In my stock battery took down to 6.2v had it in charge for 8 hours on 0.5 amps toom it of charge and it only reading 7.2v tried to discharge it again and it went down to 5.3v in like 2 minutes.

Possibly not done it for long enough ran my stock battery down to 6.4v well that was the reading on a multimeter. I have that on charge today doing a slower charge should i not bother and run it down further? So many questions thanks for the help

Not sure I can check there is a basic why to make program settings on the esc using a pin button I have the instructions I guess I could set it and see how it goes. How long should run the battery on a light I found a 12v 35w bulb. It been running for say 10 minutes now.

I've checked and my current ESC has LVC or so the manual says I was wondering if this is what was causing the stop start so to speak. I can only run 2 cell batteries unless I want to update the fan on the ESC something to do with the voltage it needs is smaller than what a LiPo will deliver. I doubt i would use my car lots maybe 1 a week and in the winter i could see it being left for good few months would LiPo still be goof for this type of use? Thanks for the comments.

Thanks Tug Could I discharge them by running the car off the ground as it does run then? But I guess that would put wear on motor as no idea how long it would take to discharge them. I could try and find a car bulb does it need to be a specific voltage bulb? Thanks Simon

Hi I have an older car that I have not driven that much. I took it out and dusted it off charged the 2 NiMH 6 cell batteries but getting very mixed results. My Voltz 5300 mAh seems to charge and a multimeter shows it has a voltage of 8.2 from a search on the internet I believe it supposed to get closer to 8.7. When I use it in the car it will not drive on the road. If I lift it up the wheels will spin quite fast but then it will not move on the road it almost rocks back and forth in one place. Is this just the Battery that has gone and is not giving the car enough power to drive. My stock battery SC 3800 mAh that came with the car works a little better. I tested with a multi meter and after charging this is around 8.4v. The car will run but if you pull the trigger hard to full throttle it will not do and tends to stop start. If you gradually pull the trigger it will get up a little speed and run smoothly but you can't do any sudden acceleration or it goes back to the stop start. My Car is a BSD Flux Assault version 1 Ezrun ESC Motor is a KV3570 I think i know the answer but want to check as I'm novice at this. I assume the issue with the stopping and starting is caused by the low voltage on the battery pack is that right? Is there anyway to re-condition the batteries? Whilst they are maybe 4-5 years old they have only been charged maybe 20-30 times. Although they were left in the box for maybe 12 months unused. I'm current have quite a basic charger Vector AC/DC NX85 which can only charge it can't discharge the batteries. If i have to replace the batteries i was considering moving to LiPo good or bad idea?

I found the answer when i stumbleed accross the manual for the ESC for the car. It is running a EZRUN Series Sensorless Brushless Speed Controller. Turn out it can take 2 Cell LiPo batteries, But if i went for 3 Cell I'd have to upgrade the cooling fan to a higher voltage version.

Thanks where is good place to post and get some advise about upgrading from Nimh to LiPo batteries

Hi Quite a novice at RC cars and recently decided to dust off my old BSD Flux Assault its the first version. My old NiMh batteries are past there best and I'm wanting to look at option for new batteries. I keep getting tempted to go for LiPo but wonder if I'm likely to see any real benefit. I also can't 100% work out if the car is compatible with LiPo batteries. The car is this model https://www.centuryuk.com/Spares/Car-Spares/Flux-Assault and the ESC is https://www.centuryuk.com/Spares/Car-Spares/Upgrades/13405-/BSD-Baja--Storm--Assault--Onslaught-Brushless-ESC-45Amp I have to replace my current NiMh units. The 1800 mAh 7.2v is just about ok but the does not not seem to get to full speed and can quickly get to the point where the car sort of stop starts i understand that may be some low voltage protection on the ESU is that right. I have a 5300 mAh 7,2v Voltz branded but that wouldn't even turn the wheels the ESC powers on and that's it. Can the older batteries be reconditioned? I read about discharging and then re-charging them but i hear you need a special charger for that, My current charger is a Vector AC/DC NX 85 but it can only charge the batteries. I'd have to invest in a new LiPo charger if i switched but that's not a massive issue for me unless the prices are astronomical. My son is looking to get a car for his birthday and we may get him a newer version of the car I have which now come with LiPo batteries on the RTR cars. The car can often sit for a while so getting batteries that can be left unused for a while is appealing are LiPo any better for this. Thanks in advance. Simon

Hi I'm certainly a novice at RC cars but want to try get back to using my brush less BSD Flux Assault again as its's been sat in a cupboard for a while now. Trying to get my eldest into using it too and he may want a car of his own for birthday in August. I'm sure to be asking a few question to get me going again. Thanks Simon