HAHIYO 3.7V 18650 4 Slots Battery Holder with Pin Less Additional Resistive Loss Allows Fully Contact Independent Batteries Bay Case Storage Box 4 PCS for DIY Toy Rechargeable Power System

Material:High quality plastic and metal Voltage output:3.7 V Package Include:4 pieces battery holder with pin These battery holder with pins are are compact,durable and well made.They comes without wires,you can use these primarily for parallel configurations or serial connection.

• Neat pins:Each polarity have a small pin so you can get the lowest possible height.This style of electrode provides minimal,negligible additional resistive loss due to contact resistance in comparison with spot welding and remain stable over time.It is be fine for a single-insertion use,and also good for use in different cyclic application in tight spaces.
• Firm contacts:The metal contacts can keep the batteries slides forward all the way and makes full contact with the positive side terminal.Flexible enough that it doesn't pull off easily under reasonable force.Won't snap when faces with stress,won't give too much strain to the back and side walls after fully loaded,no considerable deflection in that case.
• Independent slots:The last thing you want to see is the base to crack,the springs to pop out or the leads to be insufficiently connected.The slots is sturdy and flexible,batteries can stay in when held upside down.This is how you know the sides of the holder grip multiple cells well.Easy to get the batteries in and out of the fixture and very simple design.
• Easy install:No need for tape or needle nose pliers.They comes without wires,you can use these primarily for parallel configurations or serial connection.Despite bottom is marked both positive and negative anodes,but there is no specific orientation so you can solder and load the batteries how ever you'd like.More possibility for your power arrangement.
• Multi-Function:They are compact,durable and well made.If you have a battery operated wall clock that eats batteries quick,wire it to these bundle so you can charge it effortlessly.Feel free to replace the toy RC car's old battery pack with your own solution,soldered them to the back of the board,put some new batteries in,and now you got yourself a rechargeable battery management system.