The bare bones units we all know are not sufficient to the task. No-one ever complains about being able to service their own batteries. ( It had lots of starts - with so little run time it could never recharge itself. They were resultant from its weak DC charging circuit. A single service call for his ancient forklift was costing him $500. Within the week, he used it three-times to rescue his own car, the Post Office's truck (!) and his own forklift. Thirty-years ago I stuck my boss with a $190 tab for a brand new deluxe roll-around charger. :no:Īll it takes is a forgetful employee - or a rude mechanical contractor - who steals your power connection. :laughing:Īs for the number of times I've seen 'sick' lifts // dead batteries. use a relay to maintain the original outputs. You can re-wire this puppy into cranking out 28VDC. So, you see, brutally expensive - compared to a service call - or a lost man-day. Schumacher Wheeled Starter/Charger - 200/100/40/10/2 Amp, Manual, Model# SE-4022 ( don't hold me to that - just a ball park. The rolling units can toss 80 amps at 24 VDC. because your lift will need a full night's charge - or a total battery swap. The manufacturers are in the lift biz not the battery-charging biz.ģ) But, more important than the above, It stops you from stopping work. No lift ever made has that trick circuit. My DeWalt 'exotic' can de-sulfinate a battery. It's a bare bones full wave rectifying circuit. Your on-board battery charger is not designed to do that. Instead of ^&% around with the batteries - just figure out which is 'sick' - the system or the cells.Ģ) Such chargers can take a battery up from dead flat. The PRIMARY reason to get the big charger is because it will have a high output setting that permits:ġ) Instantly replaces the batteries for testing purposes. These exotic beauties go for about $8 a pop at Fry's. The typical 12VDC battery charger uses a center-tapped transformer, and in the bigger sizes simply uses paralleled full wave diode bridges. You want one that's beefier - that rolls - the last one I bought for my boss cost $190 - thirty-years ago. just killer expensive, when you think about it. The, so-called, super duper chargers are imported these days from China.Ī small one cost me $45, IIRC. ( I'd go with a two position relay, myself. Yes, play with a transformer swap out // re-wire a center-tapped transformer.ĭo relabel such a modified charger. If you tinker around, you can convert a 12 VDC charger into a 24 VDC charger. Such chargers can be 'buddied up' - if you know how to wire DC circuits - so that you have either 24 VDC or paralleled 12 VDC charging systems. ( When your machine gets unplugged so that the other guy's lift gets a charge. So, you're NOT dependent upon having your critical machine getting a charge over night. Such chargers make it possible to entirely recharge your scissor lift - during the work day - during lunch and breaks. ( Leave them hooked up )įor ANYONE with a scissor lift - get such a charger - and never leave it at the job. This step eliminates the batteries as an issue. You can hook that puppy up and then crank the lift - just up and down, please. They cost peanuts and for such a motor are easy to swap in the field.Ī robust - high end - battery charger can be used in "motor starting mode." Yes, these are the roll-around chargers you've seen at service stations across the nation. Solution: keep the motor - replace the brushes. I'll bet that you've never, ever touched them. You've worn through your DC to commutator brushes. You've got a dead spot on the armature of your DC pump-motor.įailure mode #3. You're dealing with lead - not copper.įailure mode #2. Your terminal posts are also in a serious need of PM. There are a lot of videos on battery 'games' on YouTube. You need more than a bare bones charger to bring them back up. To top that off, scissor lifts ALWAYS have conducting solutions coating all over the battery tops. This is inherent to wet cell batteries - in particular. Never let your lead-acid batteries go that long without being recharged.
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