Meanwhile, the NiMH battery is facing its first serious challenge.
与此同时，NiMH电池组正面临首次严峻挑战。
Battery life in continuous operation: 150 hours Max with dry alkaline batteries; 40 hours Max with rechargeable NiMH battery.
电池寿命，连续运行时间：干碱性电池最多150小时，可充电镍氢电池最多40小时。
Also, charging a NiMH battery is a tricky business because the voltage has to be carefully reduced as the amount of energy being stored increases.
此外，给nimh蓄电池组充电是个麻烦的过程，因为随着存储电能总量的增加，必须谨慎减少电压。
New Li-ion battery is environment friendly, outstanding in safety, good in high power discharge and low in self-discharge. It can replace NiCD and NiMh battery in many areas.
新型锂离子圆柱电池具有绿色环保、自放电低、安全性能突出、高倍率性能好等特点，在众多领域可以替代镍氢、镍镉电池，广泛应用于手电筒、控制仪、电动工具、玩具、医疗器械、家电等产品。
My recommendation is to make a small sized robot and buy 2 NiMH 6V battery packs.
我的建议是制作一个小型机器人，买2组6V的镍氢电池组。
Theyhold their charge. A lithium-ion battery pack loses only about 5 percent of itscharge per month, compared to a 20 percent loss per month for NiMH batteries.
锂离子电池能保持电量。同锂氢电池每个月损失20%的电量相比，锂离子电池组每个月仅损失5%的电量。
Pick up a battery recharger and an extra set of NiMH batteries.
最好挑选一个电池充电器和一套特优的镍氢电池组。
A hidden battery compartment within the buttstock accommodates a wide range of battery sizes including the 9.6v NiMH large battery.
隐藏在后托的电池置放设计可以相容于各种不同尺寸的电池，包括9 . 6伏特的镍氢大型电池。
A hidden battery compartment within the buttstock accommodates a wide range of battery sizes including the 9.6v NiMH large battery.
隐藏在后托的电池置放设计可以相容于各种不同尺寸的电池，包括9 . 6伏特的镍氢大型电池。
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