Train too slow using rechargeable batteries

Hi. Anyone had problems using AAA rechargeable batteries? My Thomas is running very slow in comparison with a non rechargeable battery. I don't know if I try a different rechargeable battery or the 1.5v/1.2v is making a big difference. Thks any help.

[Super]

I assume you must be talking about the Trackmaster II engines since they use two AAA's. I am not the expert around here on electrics (that would be Tramp) but you may be correct. These may be wired in Series and use 3volts whereas using two rechargeables results in 2.4volts. A more significant drop than just 1.5 to 1.2volts. Furthermore I don't believe all Rechargeables are equal in voltage but thats just my guess. Let me see if Tramp can chime in on this subject for us.

BTW, welcome to the community. Hope you stick around.

Sorry, I do not specified. It is the more simple Thomas and Friends Motorized Railway, using only one AAA battery.

[Ucwepn]

I find 1.2v rechargeable best for trains with upgraded motors as they have a higher current discharge rate and last longer than an alkaline 1.5v. I just use normal 1.5v alkaline batteries for unmodified trains, I know it's not ideal environmentally or economically. Would also like to hear what batteries people are running.

The toys are designed for 1.5V alkaline batteries which usually come out of the package with 1.7V and when flat reach 1.4V or lower.

Rechargeable batteries (NiMH) fully charged are around 1.35V and when discharged completely reach less than 1.25V.

I use NiMH rechargeable batteries.

-plarnold

As above, the rechargeable batteries have lower voltages than standard batteries. It may also be worth checking if your rechargeable battery is a new one? Rechargeable batteries have a finite life and their performance can deteriorate over time. So is probably your rechargeable! Try a different one and see if it improves any, AAA batteries have a small capacity anyway, it wouldn't have to loose much performance to stop it being suitable for use in something like this, although it might be still ok for use in a tv remote as it doesn't use as much current.