ProTek RC 1S LiPo Transmitter Battery (Sanwa M17/MT-44/MT-5) (3.7V/3000mAh)
About this part
How should the battery be inserted into the transmitter?
A suitable foam should be used to pad the battery in the transmitter battery compartment to help hold the battery in place and prevent it from moving around. Place a piece similar in size to the battery into the transmitter battery housing under the battery, and then while pressing lightly on the battery, slide the cover over the battery.
Specifications:
- Voltage: 3.7V
- Capacity: 3000mah
- Chemistry: Lithium Polymer
- Connector: JR
- Charge Rate: 2C
- Dimension (LxWxH): 62.5x45x8.5mm
- Weight: 52g
IMPORTANT:
1) DO NOT leave the battery in your model when charging
2) DO NOT leave unattended when charging
3) ALWAYS balance charge the battery
4) ALWAYS use a LiPo charging bag
5) YOU MUST use a Li-Poly specific charger to charge the pack (NiMH or NiCD only chargers WILL NOT WORK!)
6) YOU MUST not over discharge the Li-Poly battery pack
7) READ & UNDERSTAND the instructions carefully before operating this battery
NOTE: When using high energy Li-Polymer Batteries, please do not over-discharge or over-charge batteries as this will result in over heated batteries. Discharging capacity can't exceed 80% of the max capacity of the pack after full charging to ensure a good cycle performance. It is recommended to fully charge a brand new battery before using and only discharge the battery 50% for first 5 cycles. Always monitor race time and/or set a low voltage warning on ESC (End voltage cannot be lower than 3.2v per cell). Do not use the battery that has too low a voltage.
Do not expose batteries to sunshine or store/charge batteries at the temperature above 35°C or in a closed car. The high temperature environment could cause damage to the pack or make it burst. If the battery becomes hot while fast charging, high current discharging or racing, do not charge the battery until it has cooled completely. Wait about 20 mins, then inspect prior to recharging.
M17 USERS: For extended runtime, see the M17 1S 5000mAh LiPo Battery (not MT-44 compatible); PTK-5550
CA Residents Prop 65 Warning
WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details...Reviews4.3 · 8 reviews
Greatly Extends my MT-5 Battery life. Must buy if you’re using alkaline AAAs
Great battery pack. Perfect fit. And the light weight of it makes the MT-44 even more balanced.
Don't get this battery if you are using Futaba 4PM. It needs 2S to have a reasonably usable voltage range. (The low voltage alarm comes on at 3.8v!)
Extremely disappointed with this battery. The most mah that I have been able to put into this battery is 95mAh. My transmitter will drain the battery overnight!
After buying the MT 44 Transmitter and not being happy with the battery run time of the pack supplied I picked up this one. I am very happy with the pack and the run times between charges. Keep in mind this is a 1S cell pack and not all chargers will work with it.
Reviewers mostly praise this 1S LiPo pack for Sanwa M17, MT-44 and MT-5 transmitters, citing longer run time than alkaline AAA sets, a light weight that keeps the radio balanced, and a good fit. Several note it is more cost-effective over a season. One reviewer reports it drains overnight and accepts only about 95mAh of charge, and another, using a Futaba 4PM, finds the 3.8V low-voltage alarm and voltage range inadequate for that radio. Reviewers also note that not all chargers support 1S cells and that the pack must be removed to charge it, as the transmitter port cannot be used.
- + Longer run time than alkaline AAA batteries
- + Light weight keeps radio balanced
- + Good fit in Sanwa MT-44 and MT-5
- + Cost-effective over a season
- − Drained overnight and accepted only 95mAh for one reviewer
- − Low-voltage alarm at 3.8V and limited range on Futaba 4PM
- − Not all chargers support 1S packs
- − Must be removed to charge; transmitter port cannot charge it