My overall observation is that the XM-5000Li (2009) is a major improvement (and I'm impressed) over the XM-3500Li (2008)
The following link is to the "My XM-5000li Experience" discussion thread which has a wealth of information from owners of the XM-5000Li. http://visforvoltage.org/forum/5668-my-xm5000li-experience
The overall size appears to be the same. There is a significant increase in power. The parts have a better fit (quality), also, the parts seem to be of a better material. (I noticed it first on the kick stand)
I was able to go much faster (over 55MPH) than what I could on the XM-3500Li (~43 MPH) with far better acceleration. On the XM-3500Li, I almost always kept the throttle on full. With the XM-5000Li, I have to back-off the throttle to remain at the same speed as the traffic (45 and 50 MPH zones). I noticed that when I accelerate from a stop I am ahead of the cars for about 0.15 miles. On the XM-3500Li it was only ~0.05. The top speed in Economy mode is around 30 MPH. The XM-3500Li top speed in Economy mode is around 20 - 22 KPH.
The ampere reading (using an Ideal Model 61-768) was 100.4 (at full acceleration.) The XM-3500Li ampere reading was 78.4 (at full acceleration.)
The cornering stability is much better. The stability in the XM-3500Li is good, however, The lower center of gravity was more obvious than I expected and I'm really impressed.
The speedometer/odometer registers MPH/miles. Please see the "My XM-5000li Experience" discussion thread for speedometer accuracy. (To be posted will be real world distances per charge.) I traveled a known distance of 10.0 miles, the odometer display was approximately 10.07 miles traveled . The XM-3500Li registers KPH/kilometers. The XM-3500Li odometer display was 19.8 kilometers for the same 10.0 mile trip.
At first I thought I would prefer the "Economy Mode" switch on the right grip (like it on the XM-3500Li). However, after riding the XM-5000Li more than 60 miles, I doubt that I will ever use "Economy Mode". The throttle is smoother and I am able to control the power better at low speeds than I was able to with the XM-3500Li. The Economy Mode switch is located under the locked compartment (in front of the seat.)
The headlights and brake/tail lights are much brighter. The following link shows pictures of the difference in lighting. NOTE: The brake/tail light on the XM-3500Li is an 1157 bulb. The original burned out. http://visforvoltage.org/forum/5668-my-xm5000li-experience#comment-34404 The headlights are "HS1 35w/35w". The headlights on the XM3500Li are "HS1 18w/18w". There are three brake/tail lights which are 21w/5w (The socket accepts an 1157.) The XM-3500Li has one brake/tail 21w/5w light. The turn signal lights are 10w (#282) on both. The dash lights are 3w (similar to 194) on both.
Dash gauges have significantly better backlighting (vastly improved). Please see above link to pictures.
I like the feel of the switches (more solid feel than the XM-3500Li).
Both yellow buttons sound horn. On the XM-3500Li only the left button sounded the horn.
There is a warning sound (beep) when the turn signal is active (again I'm impressed). The XM-3500Li did not have this feature.
The DC converter appears to be about 30 percent larger and of better quality than the DC converter on the XM-3500Li
There are 21 TS-LFP60AHA batteries, the cables between batteries are larger gauge (~2 gauge). The XM-3500Li has 20 TS-LFP40AHA batteries, the cables between batteries are ~8 gauge.
The front 6 batteries are covered with a rubberish mat (nice). Also at the very front of the battery compartment (behind the front wheel) the louvered panel is covered.
The battery charger is a TSL60-15 (75.0/15A DC) Suitable for 21 cells Charger for lithium battery Input: AC 110V". The XM-3500Li battery charger is a TSL60-10 (72.6/10A DC) Suitable for 20 cells Charger for lithium battery Input: AC 110V".
The battery compartment is total of 25 inches Long by 8.25 inches wide. There are two sections. The front is 10.5 inches long by 8.25 inches wide by 9 inches deep. The back is 14.5 inches long by 8.25 inches wide by 8.5 inches deep. The XM-3500Li battery compartment is 26 inches long by 8 inches wide by 8 inches deep.
The mirrors are larger (measurements are approximate) 5.25 inches wide by 3.5 tall and have (what I consider) a proper protective arm cover. The XM-3500Li mirrors are 4 inches wide by 3.5 tall and have what looks like a sparkplug protective cap to cover where the mirrors attaches.
The front orange side reflectors (front fender) have a diameter of 2.25 inches. The rear red side reflectors (rear license plate) have a diameter of 2.25 inches. The XM-3500Li has only the rear orange side reflectors (rear license plate) having a diameter of 2.25 inches.
The front brakes on both the XM-5000Li and the XM-3500Li are mounted correctly. The rear brake pad alignment on the XM-5000Li had ~2 mm of the pad is not touching the disc. (I understand from others that this is not true in all cases.) The rear brake pad alignment on the XM-3500Li had ~6 mm of the pad is not touching the disc.
The XM-5000Li does not have ABS for the brakes. The XM-3500Li does have ABS for the brakes
The rear brake line is braided (nice).
The rear shocks are adjustable ( I have not adjusted them yet). I did not notice an adjustment on the XM-3500Li.
The motor has a serial number which makes it easier to title in some states. The XM-3500Li did not have a serial number on the motor.
Motor circuit breaker in better location (not using storage space). This makes it much easier gain access to the batteries.
The key cover on the XM-5000Li appears to be more secure than the XM-3500Li. However, I was able to turn the key cover by pressing on it with my finger and turning.
The approximate under seat storage is 15 inches long by 12 inches wide by 6 inches deep for both. (Note: it is not an exact rectangular space, the measurements are my best guess.)
The XM-5000Li owner's manual much better written than the XM3500Li owner's manual:
Parts in pictures have correct references
Battery Gauge and Text match (In the XM-3500Li manual the pictures in a few places did not match the text.)
Assembly instructions are relevant for mirror. No instructions for wind shield or throttle.
Basic Schematic (page 16) and Electrical Parts layout (page 17)
Page 5, charging plug identified, but not economy switch
The tool pouch (and owner’s manual) is larger (9 inches wide by 6.5 inches tall), and has a sleeve which is about the size for an insurance card (3.5 inches wide by 2.25 inches tall). The XM-3500Li tool pouch measures 9 inches wide by 4.5 inches tall
Pallet and steel crate was of better construction. I had to lift the XM5000Li (with help) out of the crate. It would have been less effort if the bottom front of the crate was bolted instead of welded. I was able to roll the XM-3500Li out the front of the crate (which has bolts in the front at the bottom.)
Enhancements I would like:
1. Wiring harness to measure/charge individual batteries
2. Mechanism to charge a single battery (or adjacent group of batteries)
3. Easier access to lights (especially head lights)
4. XM5000Li owner’s manual (in easier to understand English, I would volunteer to help do this) with the following additonal information
- a. Controller information (e.g. diagnostic information, breakers, reset buttons, etc.)
b. Motor information (e.g. voltage, amperage, maximum RPMs, efficiency)
c. Economy mode switch information
d. Battery gauge/cutoff information
e. Bulbs identified (e.g. headlights (x 2) HS1 35w/35w, etc.)
f. Minimum/Maximum recommended operating temperature (e.g. 25 degrees to 115 degrees)
g. VIN locations
h. Basic instructions on how to replace the light bulbs
i. Basic instructions on how to replace the batteries.
j. Basic instructions on how to adjust the rear shocks.
k. Basic instructions on the clock.
5. Trip meter in addition to the odometer. This could indicate miles since the last charge. I use my car's trip meter to indicate miles since the last refuel.
Additional devices I purchased:
1. Individual Cell Charger (e.g. Triton2 from ElectroFly)
2. 1” convex mirrors (not as neccessary as what is needed on the XM-3500Li.)
3. Timer for battery charger (e.g. set for 4 hours or whatever time is needed to complete a full charge) This helps eliminate the overcharge condition (repetitive switching on and off) while the charge is unattended.